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BRL 1961, MAGNEFILE B, start page 0636
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MAGNEFILE B
Magnefile Electronic Data Processing System B
MANUFACTURER
Electronics Corporation of America
Business Machines Division
Photo by Electronics Corporation of America
APPLICATIONS
Inventory control for retail sales department store. Special
purposes no longer in production.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Decimal
Decimal digits/word 8
Instructions/word Instructions wired in
Instructions used 7
Arithmetic system Fixed point
Instruction type One address
Three addresses are entered simultaneously.
ARITHMETIC UNIT
Add time (exclud stor access) 150,000 microsec
Construction vacuum tubes
Basic pulse repetition rate 30 Kc/sec
Arithmetic mode Serial
Timing Asynchronous
Operation Sequential
STORAGE
Medium Words Access Microsec
Magnetic Drum 4,040 300,000
INPUT OUTPUT
Media Speed
Full Keyboard 4 char/sec
Typewriter 7 char/sec
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 130 6 Types
Crystal diodes 40
Different plug-in units 10
Separate cabinets 1
CHECKING FEATURES
Continuous checking total
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 0.6 Kw
Area, computer 3.5 ft x 2.5 ft
Weight, computer 400 lbs
COST, PRICE AND RENTAL RATES
Approximate cost of basic system $20,000.
PERSONNEL REQUIREMENTS
One operator required during operation. A service technician
is called when needed.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Passed Customer Acceptance Test15 February 1954.
INSTALLATIONS
B. Altman and Company
Fifth Avenue
New York, New York
BRL 1961, MAGNEFILE D, start page 0637
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MAGNEFILE D
Magnefile Electronic Data Processing System Model D
MANUFACTURER
Electronics Corporation of America
Business Machines Division
Photo by Electronics Corporation of America
APPLICATIONS
Inventory control. No longer manufactured.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Decimal
Decimal. digits/word 42
Instructions/word Instructions wired in
Instructions used 77
Arithmetic system Fixed point
Instruction type One address
Three one-address commands are entered
simultaneously.
ARITHMETIC UNIT
Add time (exclud stor access) 100,000 microsec
Construction Vacuum tubes
Basic pulse repetition rate 40 Kc/sec
Arithmetic mode Serial
Timing Asynchronous
Operation Sequential
STORAGE
Media Words Access Microsec
Magnetic Drum 8,000 50 000
Magnetic Drum 500 50,000
The larger drum stores 8,000 21 dec dig words.
The smaller drum stores 500 42 dec dig words.
INPUT OUTPUT
Media Speed
Full Keyboard Manual (4 char/sec)
Typewriter 10 char/sec
Remote keyboards may be added.
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 140 4 Types
Crystal diodes 240
Different plug-in units 12
Separate cabinets 1
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 1 Kw
Area, computer 5 ft x 3 ft
Weight, computer 700 lbs
PRODUCTION RECORD
Number produced 1
No longer in production
COST, PRICE AND RENTAL RATES
Approximate cost of basic system $50,000. No longer in
production.
PERSONNEL REQUIREMENTS
One operator. On call technician.
RELIABILITY OPERATING EXPERIENCE.
AND TIME AVAILABILITY
Passed Customer Acceptance Test 5 August 1953.
INSTALLATIONS
B. Altman and Company
Fifth Avenue
New York, New York
BRL 1961, MANIAC I, start page 0638
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MANIAC I
Mathematical Analyzer Numerical Integrator and
Computer Model I
MANUFACTURER
University of California
Los Alamos Scientific Laboratory
Photo by University of California, Los Alamos Scientific Laboratory
APPLICATIONS
University of New Mexico Research Center Located at University of New
Mexico Research Center, 2206 Lomas Blvd., N.E. (Box 181), albuquerque,
New Mexico, the system is used for general purpose scientific computations,
providing a computer service to faculty and students of the university.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits per word 40
Binary digits/instruction 8
Instructions per word 2
Instructions decoded 36
Binary digits/instruction
not decoded 2
Instructions used 35
Arithmetic system Fixed point
Instruction type One address
Number range -1 < n < 1
ARITHMETIC UNIT
Exclud Stor Access
Microsec
Add time 80
Mult time 1,000
Div time 1,000
Construction Vacuum tubes
Arithmetic mode Parallel
Timing Asynchronous
Operation Concurrent
STORAGE
Access
Media Words Microsec
Electrostatic (CRT) 1,024 8 - 16
Magnetic Drum 10,000 50 words in 83,000
Cathode Ray Tube is of the Williams type.
BRL 1961, MANIAC I, start page 0639
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INPUT
Media Speed
Paper Tape 1,024 words in 48 seconds
Magnetic Tape 1,024 words in 45 seconds
OUTPUT
Media Speed
Printer (Teletype) 36 words/min
Printer (Anelex) 3,600 words/min
Paper Tape 81 words/min
Magnetic Tape 1,024 words in 45 seconds
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 2,400
Tube types
Crystal diodes 500
Different plug-in units 1 Electrostatic
6 Magnetic Drum
Separate cabinets 4
Type 2BP1 cathode ray tubes (Williams) are used in the
storage unit.
CHECKING FEATURES
Check sum on filling storage by paper tape and magnetic tape.
Check sum on filling magnetic drum.
POWER, SPACE, WEIGHT, AND SITE PREPARATION
University of California
Power, computer 35 Kw
Volume, computer 128 cu ft
Area, computer 20 sq ft
Capacity, air conditioner 10 Tons
U of New Mexico
Site preparation include channeled floor for air conditioning and
power, ceiling ducts for air conditioning, and a special room for
the motor-generators (D.C. supply).
COST, PRICE AND RENTAL RATES
Approximate cost of basic system $250,000.
Approximate cost of high speed printer and magnetic drum
$48, 000.
Prices include development, construction and overhead.
PERSONNEL REQUIREMENTS
U of New Mexico System is to be operated and
maintained by one person. It is expected to be operating prior
to 1 Jan 1961 at the University of New Mexico.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
U of New Mexico
Average error-free running period 5 Hours
Good time 11,493 Hours
Attempted to run time 12,399 furs
Operating ratio (Good/Attempted to run time) 0.93
Above figures based on period from Mar 52 to Jan 57
Passed Customer Acceptance Test Mar 52
Time is available for rent to outside organizations.
The machine was moved to the University of New
Mexico in 1958. Installation was started in 1959.
FUTURE PLANS
U of New Mexico The machine is being studied by
approximately six graduate students at the Master of Science
level, with three masters thesis being written on proposed
system changes, including, replacing the single channel tape
system with a multi-channel system, a logical study of a
program interchange between
MANIAC I and a NATIONAL 102A, and modifications to
the existing adder in the machine.
INSTALLATIONS
University of New Mexico
Research Center
2206 Lomas Blvd. N. E.
Albuquerque, New Mexico
BRL 1961, MANIAC II, start page 0640
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MANIAC II
Mathematical Analyzer Numerical Integrator and
Computer Model II
MANUFACTURER
University of California
Los Alamos Scientific Laboratory
Photo by University of California, Los Alamos Scientific Laboratory
APPLICATIONS
University of California, Los Alamos Scientific Laboratory
Located at Los Alamos, N. M., the system is used for studies
in automatic programming, symbolic manipulations (e.g.,
algebra, differential calculus), mathematics, esp.
combinatorial and algebraic transformations, Monte Carlo,
crystallography, and general applied mathematics.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 48
Binary digits/instruction 24
Instructions per word 2
Instructions decoded 94
Aritbmetic system Fixed and floating point
Instruction type One address
Number range 2112
Instruction word format
+----------+----------+----------+----------------+
| 1 | 2 8 | 9 10 | 11 24 |
+----------+----------+----------+----------------+
| Break | Order | Index | Address |
| Point | | | |
+----------+----------+----------+----------------+
Automatic coding includes MADCAP (86 characters, full
sub- and superscripting). Display quotients are planned.
Registers and B-boxes include 3 B-boxes, a universal register, a
storage register and a remainder register.
ARITHMETIC UNIT
Incl Stor Access Exclud Stor Access
Microsec Microsec
Mult 180 avg 180 avg
Div 300 avg 300 avg
Construction (Arithmetic unit only)
Vacuum tubes 2,850
Diodes 1,040
BRL 1961, MANIAC II, start page 0641
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Arithmetic mode Parallel
Timing Asynchronous
Operation Sequential
STORAGE
No. of No. of Bin Access
Media Words Dig/Word Microsec
Cathode Ray Tube 12,288 49 15 (avg)
(Barrier Grid)
Magnetic Cores 4,096 49 2.4
Magnetic Tape
No. of units that can be connected 3 Units
No. of chars/linear inch of tape 300 Char/inch
Channels or tracks on the tape 1 Track/tape
Blank tape separating each record 6 Inches
Tape speed 60 Inches/sec
Transfer rate 18,000 Char/sec
Start time 25 Millisec
Stop time 30 Millisec
Average time for experienced
operator to change reel of tape 60 Seconds .
Physical properties of tape
Width 0.25 Inch
Length of reel 1,200 Feet
Composition 1 1/2 mil mylar sandwich
Two physical tracks on tape combine to form a sin-
gle information channel.
INPUT
Media Speed
Magnetic Tape 270 words/sec
Paper Tape 250 char/sec
Keyboard Manual
OUTPUT
Media Speed
Magnetic Tape 270 words/sec
Printer 77,400 char/sec (MAX)
Punch 60 char/sec
Electric Typewriter 10 char/sec
Printer speed is 900 lines/min.
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type Quantity
Tubes 5,190
Diodes 3,050
Transistors 1,160
Magnetic Cores 200,700
95% of the tubes are Type 5965. 5,% are high power
drives.
CHECKING FEATURES
Parity check on electrostatic storage and magnetic tape.
Load sums for identification (+) Exponent spill Overflow (-)
Exponent spill
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 37 KVA
Volume, computer 1,000 cu ft
Area, computer 150 sq ft
Capacity, air conditioner 15 Tons
PRODUCTION RECORD
Number produced to date 1
Number in current operation 1
COST, PRICE AND RENTAL RATES
The total cost is about $350,000.
PERSONNEL REQUIREMENTS
One 8-Hour Shift
Supervisors 3
Analysts 4
Programers 8
Coders 2
Clerks 1
Operators 1
Engineers 4
Technicians 4
Operation tends toward open shop.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Average error-free running period Several Hours
Good time 50 Hours/Week (Average)
Attempted to run time 52 Hours/Week (Average)
Operating ratio (Good/Attempted to run time) 0.96
Above figures based on period from 1958 to present
Time is not available for rent to outside organiza-
tion.
ADDITIONAL FEATURES AND REMARKS
3 indexing registers (B registers) for automatic, address
modification and cycle counting (independent of arithmetic
elements).
Semi-automatic exit from sub-routines.
Large base for floating point operation to increase speed of
floating point additions.
"Madcap", Mathematical and Descriptions Coding Assembly
Program, will translate a series of logical and algebraic
statements into a computer ready code, this will use a seven hole
tape, standard coding uses five holes. Tape reader can handle
either.
INSTALLATIONS
University of California
Los Alamos Scientific Laboratory
P. O. Box 1663
Los Alamos, New Mexico
BRL 1961, MANIAC III, start page 0642
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MANIAC III
Mathematical Analyzer Numerical Integrator and Computer
MANUFACTURER
University of Chicago
Institute for Computer Research
APPLICATIONS
This system will be used by all interested departments of the
University of Chicago.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 48
Instructions per word 1
Instructions decoded 94
Arithmetic system Floating point
Instruction type Two address
Number range
Fraction range (1 - 2-39) to -1
Exponent range +127 to -127
Instruction word format
+------+----------+----------+----------+----------+----------+----------+----------+
| 1 | 7 | 1 | 5 | 14 | 1 | 5 | 14 |
+------+----------+----------+----------+----------+----------+----------+----------+
| Tag | Opera- | Inflec- | Modi- | Address | Inflec- | Modi- | Address |
| | tion | tor | fier | | for | fier | |
+------+----------+----------+----------+----------+----------+----------+----------+
Registers and B-boxes
3 Arithmetic Registers
8 Transistor Storage Registers
8 Index Registers
2 Indicator Registers
Four different types of arithmetic (significant digit floating
point, specified point, normalized, basic), all using same number
format (exponent-fraction).
Special exponent used to denote absolute zero (essentially zero
with exponent -(x).
ARITHMETIC UNIT
Incl Stor Access Exclud Stor Access
Microsec Microsec
Add 24 + n/2 18 + n/2
Mult 71 65
Div 81 75
n = difference of exponents.
Construction (Arithmetic unit only)
Transistors 10,000
Condenser-diodes 16,000
Arithmetic mode Parallel
Timing Asynchronous
Operation Concurent
STORAGE
Access
No. of Words No. of Digits Microsec
8,192 48 1
Plans in progress toinclude an additional 8,192
words.
Magnetic Tape
No. of units that can be connected 4 Units
No. of char/linear inch of tape 250 Char/inch
Channels or tracks on the tape 8 Tracks/tape
Blank tape separating each record 5 Inches
Tape speed 150 Inches/sec
Transfer rate 37,500 Char/sec
Start time 5 Millisec
Stop time 5 Millisec
Average time for experienced
operator to change reel of tape 60 Seconds
Physical properties of tape
Width 0.5 Inches
length of reel 2,500 Feet
Composition Mylar
INPUT
Media Speed
Paper Tape 350 char/sec
Keyboard (Type- Manual Alphabetic and numeric
writer)
Magnetic Tape 37,500 char/sec
OUTPUT
Media Speed
Paper Tape 60 char/sec
Line Printer 600 lines/min
Magnetic Tape 37,500 char/sec
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type quantity
Diodes 20,000
Transistors 12,000
Magnetic cores 500,000
CHECKING FEATURES
Parity on tapes and core storage.
BRL 1961, MANIAC III, start page 0643
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POWER, SPACE, WEIGHT, AND SITE. PREPARATION
Power, computer 2 Kw 2 KVA 1.0 pf
Area, computer 64 sq ft
Roam size, computer 25 ft x 30 ft
Floor loading 50 lbs/sq ft max
20 lbs/sq ft
50 lbs concen max
Weight, computer 600 lbs
Roam temperature controlled to 75oF., humidity 40% - 60%.
Cable ways under floor, or false floor.
PERSONNEL REQUIREMENTS
Open shop policy.
ADDITIONAL FEATURES AND REMARKS
All arithmetic performed on operands in exponentcoefficient
form; several options for sealing of result allow calculation to
be performed, "generalized fixed point", "normalized",
significance-mode, or multiple-precision as convenient.
INSTALLATIONS
University of Chicago
Institute for Computer Research
Chicago 37, Illinois
BRL 1961, MERLIN, start page 0644
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MERLIN
MERLIN
MANUFACTURER
Brookhaven National Laboratory
APPLICATIONS
Located at Upton, New York, the system is used for Atomic
Energy Commission programs, including areas of physics,
chemistry, biology, medicine, reactor studies, acceleration
design and meteorology.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Number of binary digits per word 48
Number of binary digits per
instruction 48
Number of instructions per word 1
Number of instructions decoded Approx 90
Arithmetic system Floating point
Fixed point
Instruction type One address (mostly)
Two address (some)
Number range 2-120 - 2120
Instruction word format
+----+----+----+----+-----------------+--------------------+
| Y | Z | b | b' | m | m' |
+----+----+----+----+-----------------+--------------------+
YZ = command (two hexadecimal characters)
b B box address for lst address, 2nd address
b' (4 bits each)
m lst memory address (16 bits each)
m' 2nd memory address
Automatic built-in subroutines
Square-root
Registers and B-boxes 6 B-boxes 3 shifting and 4 non-shifting
registers, the latter for fast access storage, in Arithmetic
Section Pathfinder for subroutine return 16 bit Sense Register
48 bit word has one multi-address instruction.
The numerical operand represents number in the form
28e X: four bits specify magnitude of exponent e, one bit its
sign; 40 bits the magnitude of the fractional part X and one bit
its sign Of the remaining two bits of the word (tag bits), one
may be automatically detected by control. Fetching of next
sequenced instruction begins before completion of operation.
MERLIN is patterned after MANIAC II (Los Alamos).
ARITHMETIC UNIT
Incl. Stor. Access Exclud. Stor. Access
Microsec. Microsec.
Add 8 us (3.5) -
Mult. 140 us 130
Div. 330 " 320
Construction, arithmetic unit only
Type Quantity
Vacuum tubes
5956 800
6197 275
Diodes
T3G 7,000
Arithmetic mode Parallel
STORAGE
No. of No. of Access
Medium Words Digits Microsec
Electrostatic
Barrier Grid Tube 8,192 49 6
INPUT
Media Speed
Flexowriter 10 char/sec Friden
Paper Tape 200 char/sec Ferranti TR 2
Magnetic Tape 20K char/sec Ampex FR 300 - 4 units
OUTPUT
Media Speed
Flexowriter 10 char/sec Friden
Paper Tape 60 char/sec Teletype
Magnetic Tape 2OK char/sec Ampex FR 300
Printer 10 lines (96 char) Shepard
sec
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type Quantity
Tubes
5965 2,500 Blocking Osc. Flip Flops and
Cathode followers
6197 400 Pulse Drivers
12E1 18 Deflection Amplifiers and Pulse
Amps.
OA2 24 Regulators
Diodes
T3G 16,000 Gating and Switching
T5G 350 Gating and Switching
IN643 150 Gating and Switching
Zenor Diodes
Various 40 Bias Supplies
Transistors
2N247 400 Memory Read Amplifier and Buffer
2N393 100 Memory Discriminator
2N344 300 Memory Strobe and Parity
2N1091 20 Emitter Followers
Magnetic Cores
Various 1,200 Blocking Oscillator and Pulse
Transformers
BRL 1961, MERLIN, start page 0645
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CHECKING FEATURES
Parity check at input/output and memory output. Single bit
error correction to be added at memory output.
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 40 Kw 45 KVA 0.9 pf
Power, sir conditioner 16 Kw 18 KVA 0.9 pf
Volume, computer 1500 cu ft
Area, computer 165 sq ft
Room size, computer 1400 sq ft
Volume, air conditioner 150 cu ft
Area, air conditioner 25 sq ft
Room size, air conditioner 1200 sq ft
Capacity, air conditioner 20 Tons
PRODUCTION RECORD
Number produced to date 1
Number in current operation 1
COST, PRICE AND RENTAL RATES
Cost $600,000
PERSONNEL REQUIREMENTS
One 8-Hour Shift
Used
Supervisors 1
Analysts 2
Programmers 7
Clerks 1
Engineers 2
Technicians 3
Operation tends toward open shop.
Formal two week course (1 1/2 hr/day).
Individual assistance as required.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Time is available for rent to outside organizations on a
qualified basis. Operating figures are not yet available.
Computer is in final stages of debugging and is available on a
limited basis.
ADDITIONAL FEATURES AND REMARKS
Outstanding features include 4 fast access temporary storage
registers.
FUTURE PLANS
An additional 8000 words of Radechon memory still be
incorporated with a self-correcting code. An 8000 word
magnetic core memory will also be added.
Modifications, including specialized input-output equipment,
will be undertaken on the basis of specific research
requirements.
INSTALLATIONS
Brookhaven National Laboratory
Upton, New York
BRL 1961, MINIAC II, start page 0646
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MINIAC II
MINIAC II
MANUFACTURER
Marchant Calculators, Incorporated (Now
Smith-Corona Marchant, Inc.)
Data Processing Systems Division
Picture by The Atlantic Refining Company, Incorporated, Dallas, Texas
APPLICATIONS
The Atlantic Refining Company Scientific and engineering.
Utilized by the Atlantic Refining Company's Research and
Development Department for research and development in oil
exploration and production. Scientific and engineering
applications include synthetic seismograms, geophone responses,
chemical process designs and fluid flow in porous media.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Bin coded and Hexa dec
Digits per word 10 decimal
Digits per instruction 10 decimal
Instructions per word 1
Instructions decoded 71
Arithmetic system Fixed point
Instruction type One address
ARITHMETIC UNIT
Includ. Stor. Access Exclud. Stor. Access
Microsec Microsec
Average Maximum
Add time 11,200 21,200 450
Mult time 24,300 41,400 13,600
Div time 25,600 43,200 14,800
Construction Vacuum tubes
Basic pulse repetition rate 300 Kc/sec
Arithmetic mode Serial
Timing Synchronous (clocking
channels on the drum)
Operation Sequential
The add time, excluding storage access, given above, is
equivalent to 3 word times. The operand and instruction times
are included in all the above values.
BRL 1961, MINIAC II, start page 0646
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STORAGE
Microsec
Media Words Digits Access
Magnetic drum 4,096 10 plus sign 1,200-10,000
256 words, 2,500 microsec average access, is optional.
INPUT
Media Speed
Paper Tape (Flexowriter) 600 char/min (6 channel tape)
Ferranti Photoelectric 300 words/min (limited
Reader by loading program)
Keyboard Manual
OUTPUT
Media Speed
Paper Tape (Flexowriter) 600 dig/min
Friden Punch 30 char/sec (6 channel)
Spare Flexowriter can also be used for the separate preparation
of data and programs.
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 850
Tube types 7 cover 95%,
Crystal diodes 2,000
Separate cabinets 1
There are 75 types of plug-ins at $10 each.
50%, of the machine uses 7 types of plug-ins.
The major types of tubes are the 5963, 5687, 12BH7,
12AT7 5965, 5915, 2D21
A cold water supply and a desk for the Flexowriter is included.
CHECKING FEATURES
Timing circuits
Twenty jacks for applying marginal voltages
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 5 KW, 220 volt
Space, computer 91 cu ft, 20 sq ft
Space, air cond. Dimensions 4.5 x 4.5 x 4.5 ft
plus desk
Weight, computer 2,000 lbs
Capacity, air cond. 2 tons
Designed for cooling by water between 60o and 65oF.
PRODUCTION RECORD
Produced1 Model C and 1 Model II
Operating1 Model C and 1 Model II
Delivery timeNo longer manufactured
COST, PRICE AND RENTAL RATES
Approximate cost of basic system $85,000
Approximate cost of Flexowriter 2,950
Approximate cost of Spare Flexowriter 2,950
No maintenance contract.
PERSONNEL REQUIREMENTS
One 8-Hour Two &-Hour Three 8-Hour
Shift Shifts Shifts
Used Recom Used Recom Used Recom
Operators 1 1 1 2 1 2
Typist 0 1 0 1 0 1
Methods of training used On the Job
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Good time 42 Hours/Week
Attempted to run time 48 Hours/Week
Operating ratio (Good/Attempted 0.875
to run time),
Above figures based on period from 26 Feb 60 to
26 Mar 6o
Acceptance test 1 Mar 55
Time is not available for rent to outside organizations.
Magnetic drum replaced in 1958.
Converted from one-address to two-address operation in 1959.
FUTURE PLANS
Incorporation of a Moseley system, to have the
following items: Tape Translator X-Y Recorder Character
Printer Curve Follower
INSTALLATIONS
Atlantic Refining Company
Research and Development Laboratory
4500 W. Mockingbird Lane
Dallas, Texas
BRL 1961, MISTIC, start page 0648
|
MISTIC
Michigan State Digital Computer
MANUFACTURER
Michigan State University
Photo by Michigan State University
APPLICATIONS
Service facility for University staff and students on an open
shop basis for general purpose computation.
Used for instructional purposes in several programming
and numerical analysis courses vhich are offered for credit by
the University.
Available for use on applicable sponsored research
projects.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Number of binary digits per word 40
Number of binary digits per instruction 20
Number of instructions per word 2
Total number of instructions decoded 186, of which 139
are unique
Arithmetic system Fixed point
Instruction type One-address
Number range -1 to +(1-2-39)
BRL 1961, MISTIC, start page 0649
|
Instruction word format
+--------------------+----------+-------------------+-------------+
| ORDER | ADDRESS | ORDER | ADDRESS |
| Type Variant | | Type Variant | |
| 4 bits 4 bits | 12 bits | 4 bits 4 bits | 12 bits |
+--------------------+----------+-------------------+-------------+
Two 40-bit shifting registers and one 40-bit fixed register for
arithmetic operations.
Two separate 2-bit registers will hold a bank address for
16,384 word core memory, one register each for operands
and instructions.
ARITHMETIC UNIT
Operation, Incl stor. access Microseconds
Add time 100
Mult time 1,000
Div time 1,100
Excl stor. access
Add time 80
Mutt time 980
Div time 1,080
Construction (Arithmetic unit only)
Vacuum tubes type Quantity
5844 580
7044 236
5670 120
Arithmetic mode Serial
STORAGE
Media Number Digits per Access
of Words Word Microseconds
Cathode Ray Tube 1,024 40 bin 20
Magnetic Core 16,384 40 bin 20
The MCmemory will replace the CRT memory.
INPUT
Media Speed
5-level Fhotodiode Paper Tape 300 char/sec
Cards 200 cards/min
Above speeds are maximum. Card decoding is programmed
so that input is 100 cards/minute for most applications.
OUTPUT
Media Speed
Paper Tape 60 char/sec
Teletypewriter 10 char/sec
Cards 100 cards/min, max
Cards are program decoded.
CRT output is under construction.
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes
Type Quan
544 1, 300
5670 650
7044 400
5726 100
Misc. 160
Total 2,610
CHECKING FEATURES
Division algorithm automatically checks for overflow and
division by O.
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 18.5 K. W., input to com-
puter
Power, air conditioner 10 K. W., including fan,
water pump and cooling
tower fan
Volume, computer 500 cu ft
Volume, power supplies 200 cu ft
Volume, air conditioner 150 cu ft
Volume, cooling tower 320 cu ft
Area, computer 75 sq ft
Area, power supplies 30 sq ft
Area, air conditioner 32 sq ft
Area, cooling tower 32 sq ft
Room, computer 12 ft x 18 ft
Room, power supplies 8 ft x 9 ft
Air conditioner 10 Horsepower
PRODUCTION RECORD
Number produced to date 1
Number in current operation 1
PERSONNEL REQUIREMENTS
Typical Personnel One 8-Hour Shift
Supervisors 1
Analysts 2
Programmers 2
Clerks 1
Librarians 1
Operators 1
Engineers 1
Technicians 1
The computer is operated on an open-shop basis so
that most of the functions other than direct opera-
tion and maintenance of the computer are taken care
of by the various users.
INSTALLATIONS
Michigan State University
East Lansing, Michigan
FUTURE PLANS
A 40-bit 16,384 word core memory is under construction and
will replace the existing 1,024 word CRT memory in the Fall of
1960.
A CRT output with an attached camera is also under
construction which will permit analog output directly from the
computer. This will be made available in the Fall of 1960.
BRL 1961, MOBIDIC A, start page 0650
|
MOBIDIC A
Mobile Digital Computer A AN/MYK-1(v)
MANUFACTURER
Sylvania Electric Products, Incorporated
Photo by Sylvania Electric Products, Inc.
APPLICATIONS
Presently located at the Needham Industrial Park, the
MOBIDIC "A" is a mobile, highly-reliable, high speed, general
purpose computing facility for use by field commanders for
combat support data processing, combat control data
processing, combat computation, and logistic computations.
The Real Time System consist of Real Time InputOutput
registers, both of which are capable of communicating with an
external device (including another MOBIDIC) over nine lines (6
data, 1 parity, 2 control). The Input system incorporates a
program interupt feature.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 36 plus sign & parity bits
Binary digits/instruction 36 plus spare & parity bits
Instructions per word 1
Instructions decoded 52
Arithmetic system Fixed point
Assumed binary point at left end of word, between
bits 36 & 37
Instruction type One address
Some instructions are two address, e.g. load, move,
etc.
Number range-(1 - 2-36) to +(1 - 2-36)
BRL 1961, MOBIDIC A, start page 0651
|
Instruction word format
Standard Computer Instruction Word
+--------+--------+---------+-----------+-----------+----------------+
| 38 | 37 | 36 31 | 30 28 | 27 16 | 15 13 12 1 |
+--------+--------+---------+-----------+-----------+----------------+
| Parity | Spare | Op. |Index Reg. | Minor | Major |
| | | Code | Selection | Address | Address |
+--------+--------+---------+-----------+-----------+----------------+
Input-Output Instruction Word
+--------+--------+---------+-----------+-----------+----------------+
| 38 | 37 | 36 31 | 30 22 | 21 16 | 15 13 12 1 |
+--------+--------+---------+-----------+-----------+----------------+
| Parity | Spare | In- |Word-Block | Device | Storage |
| | | Out |Counter | Selec- | Address |
| | | Comd | | tion | |
+--------+--------+---------+-----------+-----------+----------------+
Automatic coding includes the Mobidic Assembly
Program.
Registers include 6 in the Central Processor, 4 Index, 2 in
the Communications Converter, and 2 in the In/Out
Converter.
Instructions consist of 15 Arithmetic, 8 Transfer, 17 Logical,
3 Sense, and 9 Input-Output instructions.
Index Registers are expansible to a total of 7.
ARITHMETIC UNIT
Incl. Stor. Access Exclud. Stor. Access
Microsec Microsec
Add 16 8
Mult 86 78
Div 88 88
Construction (Arithmetic unit only)
Transistors 6,000
Arithmetic modeParallel
Timing Synchronous
Operation Sequential
Mostly sequential, however processing may proceed during
input-output operations.
STORAGE
No. of No. of Access
Media Words Bits/word Microsec
Core Memory (2) 4096 each 40 8
Expandable to a total of 7 memories.
Magnetic Tape
No. of units that can be connected 63 Units
No. of chars/linear inch of tape 300 Chars/inch
Channels or tracks on the tape 8 Tracks/tape
Blank tape separating each record 1.5 Inches
Tape speed 150 Inches/sec
Transfer rate 45,000 Chars/sec
Start time 1.5 Millisec
Stop time 1.5 Millisec
Average time for experienced
operator to change reel 120 Seconds
Physical properties of tape
Width 1/2 Inches
Length of reel 3600 Feet
Composition 1 mil mylar
The 40 bit word length in storage is made up of:
36 bit magnitude
1 bit sign
1 bit parity
1 busy-bit
1 spare-bit
---
40 Total in storage
INPUT
Media Speed
Paper Tape 5 channel 200 char/sec (start-stop) to
11/16 inch tape 270 char/sec
Paper Tape 8 channel 200-270 char/sec
1 inch tape
Real Time Channel 120,000 char/sec
character by character '
Cards 200 cards/min
The Real Time System was designed to operate with the
Collins Kineplex equipment whose speed is 300 characters/sec.
or with another MOBIDIC; however, it can operate with any
compatible transmission equipment.
OUTPUT
Media Speed
Paper Tape 5 channel 100 char/sec 11/16" tape
Paper Tape 8 channel 100 char/sec 1 inch tape
Real Time 120,000 char/secchar by char
Flexowriter 10 char/sec
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type Quantity
Diodes
SG-225 6,000
Transistors
2N393 32,000
Magnetic Cores 311,200
CHECKING FEATURES
Checking features include parity on memory transfer and input-
output, overflow, nonexistent memory, non-existent instruction,
and non-existent device (I/0). Marginal. checking may also be
performed. Diagnostic Routines to check the machine and indicate
instruction which fail and aid in the localization of failures are
available.
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 29.76 Kw 37.2 KVA 0.8 pf
Power, air conditioners 4.64 Kw 5 8 KVA 0.8 pf
Volume, computer 1,440 cu ft
Area, computer 240 sq ft
Floor loading 300 lbs/sq ft
240 lbs concen max
Volume, two air conditioners 72 cu ft
Area, two air conditioners 48 sq ft
Capacity, two air conditioners 6 Tons
Weight, computer 12,000 lbs
Weight, air conditioners 1,200 lbs
The computer is mounted in a 30 foot van, air conditioning
ducts on the right and left ceilings, and the heater duct at floor
level behind the I/0 converters, Central Processor, and memory
units.
Air-conditioning is for operator comfort only.
BRL 1961, MOBIDIC A, start page 0652
|
PRODUCTION RECORD
Number produced to date 1
Number in current operation 1
Time required for delivery 18 months
System is being tested and evaluated.
COST, PRICE AND RENTAL RATES
Large computer system such as this one is seldom duplicated
from one installation to another. Individual problem and
application normally requires unique configuration and special
features that establish either purchase or lease price. Upon
completion of a feasibility study when the requirements are
known, along with a calculated growth, costs could be
determined.
PERSONNEL REQUIREMENTS
Training will be dependent on the requirements of the user.
However, it is recommended that personnel have a minimum
of 4 weeks of formal class room lectures followed, if possible,
by closely supervised on-the-,job-training.
Number of operating personnel will depend on the
requirements of the user.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Time is not available for rent to outside organizations.
ADDITIONAL FEATURES AND REMARKS
Outstanding features include ruggedization for field use.
System operates between -25OF to 125oF and 0 to 97%
relative humidity. It is built on a modular basis, expansible in
memory (to 7), I 0 converter (up to 4), and I/0 equipment (to
635.
Unique system advantages include containment in
240 sq ft. It is a completely mobile, large scale,
general purpose system.System is designed for
reliability, mobility, flexibility, fixed plant,
and strategic installation, with minimum space
requirements, and minimum pyre-installation cost,
such as air conditioning and power. This machine is
a member of the ArmyDATA Family of Computers.
It uses the FIELDATA code and is compatible with
other FIELDATA machines.
INSTALLATIONS
One MOBIDIC will be installed for the 7th Army Stock
Control Center in Germany. Other systems will be installed to
cover a wide range of applications.
BRL 1961, MOBIDIC A, start page 0653
|
BRL 1961, MOBIDIC B, start page 0654
|
MOBIDIC B
Mobile Digital Computer B AN/MYK-2(v)
MANUFACTURER
Sylvania Electric Products, Incorporated
APPLICATIONS
The MOBIDIC B is a duplexed general purpose computer being
developed for inclusion into a tectical army operation center.
The machine's mechanized instruction list was selected for
optimized operation in the processing of data rather than for
scientific calculations. The two machines may be synchronized
together and run as one machine or they may be used separately.
The MOBIDIC B has two real time in-out registers and
possible sources of such real time data are radar equipment,
weather stations, drone aircraft and other MOBIDICS. This
computer is also suited for applications such as message
switching centers. One processor receives the incoming message
and does the incoming processing and then stores the message in
the common mass memory. The second processor would serve
as the output message processor, taking the message from the
common mass memory completing the processing and
transmitting it out. If one machine failed, the second could
handle the work at a reduced system speed.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 36 plus sign bit & parity
Binary digits/instruction 36 plus spare bit & parity
Instructions/word 1
Instructions decoded 55 + 9 special subroutine
instructions
Arithmetic system Fixed point
Assumed binary point at left end of word, between
bits 36 and 37
Instruction type One address
Some instructions are two address, e.g. load, move,
etc.
Number range -(1 - 2-36) to +(1 - 2-36)
Instruction word format
Standard Computer Instruction Word
+--------+--------+---------+-----------+-----------+----------------+
| 38 | 37 | 36 31 | 30 28 | 27 16 | 15 13 12 1 |
+--------+--------+---------+-----------+-----------+----------------+
| Parity | Spare | Op. |Index Reg. | Minor | Major |
| | | Code | Selection | Address | Address |
+--------+--------+---------+-----------+-----------+----------------+
Input-Output Instruction Word
+--------+--------+---------+-----------+-----------+----------------+
| 38 | 37 | 36 31 | 30 22 | 21 16 | 15 13 12 1 |
+--------+--------+---------+-----------+-----------+----------------+
| Parity | Spare | In- |Word-Block | Device | Storage |
| | | Out |Counter | Selec- | Address |
| | | Comd | | tion | |
+--------+--------+---------+-----------+-----------+----------------+
Automatic coding includes MOBIDIC Assembly Program.
Registers include 8 in the central processor, 2 in the
communications converter, 2 in the In/Out Converter and 7
index registers. Instructions consist of 15 Arithmetic, 9
Transfer, 18 Logical, 3 Sense, 10 Input-Output, and 9 Special
instructions.
ARITHMETIC UNIT
Incl. Stor. Access Exclud. Stor. Access
Microsec Microsec
Add 42 34
Mult 88 80
Div Not mechanized
Construction (Arithmetic unit only)
Transistors 6,000
Arithmetic mode Parallel
Timing Synchronous
Operation Sequential
STORAGE
No. of No. of Access
Media Words Bits/word Microsec
Magnetic Core 8,192 8
Disk 6.25 x 106 8 1 x 106
Expansible to a total of 7 core memories of
4,096 words each
Magnetic Tape
No. of units that can be connected 63 Units
No. of chars/linear inch of tape 300 Chars/inch
Channels or tracks on the tape 8 Tracks/tape
Blank tape separating each record 1.5 Inches
Tape speed 150 Inches/sec
Transfer rate 45,000 Chars/sec
Start time 1.5 Millisec
Stop time 1.5 Millisec
Average time for experienced 120 Seconds
operator to change reel
Physical properties of tape
Width 1/2 Inches
Length of reel 3,600 Feet
Composition 1 mil mylar
INPUT
Speed
Paper Tape 5 channel 200 char/sec (start-stop)
1116 inch tape 270 char/sec
Paper Tape 8 channel 200-270 char/sec
1 inch tape
Real Time Channel 120,000 char/sec
oharacter by character
Cards 200 cards/min
The Real Time System was designed to operate with the
Collins Kineplex equipment whose speed is 300 characters/sec.
or with another MOBIDIC; however, it can operate with any
compatible transmission equipment.
OUTPUT
Media Speed
Paper Tape 5 channel 100 char/sec 11/16" tape
Paper Tape 8 channel 100 char/sec 1 inch tape
Real Time 120,000 char/sec char by char
Flexowriter 10 char/sec
BRL 1961, MOBIDIC B, start page 0654
|
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type Quantity
Diodes
SG225 6,000
Transistors
2N393 Approx.30,000
Magnetic Cores 655,360
CHECKING FEATURES
Checking features include parity on memory transfer and input-
output, overflow, non-existant memory, non-existant
instruction, and non-existant device (I/0). Marginal checking
may also be performed. Diagnostic Routines to check the
machine and indicate instruction which fail and aid in the
localization of failures are available.
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 34.2 Kw 42.75 KVA 0.8 Pf
Power, air conditioner 6.6 Kw8.25 KVA 0.8 pf
Volume, computer 690 cu ft
Volume, sir conditioner 72 cu ft
Area, computer 115 sq ft
Area, sir conditioner 48 sq ft
Weight, computer 12,600 lbs
Weight, sir conditioner 1,200 lbs
Capacity, air conditioner Two at 1.5 Tons each
Air conditioners are for personnel comfort only
Computer is mounted in a 30 ft van and a shelter of
approximately the size of an S-109.
PRODUCTION RECORD
Number in current production 1
Number on order 1
Time required for delivery 18 months
ADDITIONAL FEATURES AND REMARKS
Outstanding features include reggedization for field use.
System operates between -250oF to +125oF and 0 to 97%
relative humidity. It is built on a modular basis, expansible in
memory (to 4), I/0 converter (up to 4), and I/0 equipment (to 635.
Unique system advantages include containment in 335 sq ft. It
is a completely mobile, large scale, general purpose system.
System is designed for reliability, mobility, flexibility, fixed
plant, and strategic installation, with m-ini,mrm space
requirements, and minim= pre-installation cost, such as air
conditioning and power. This machine is a member of the Army
FIELDATA Family of Computers. It uses the FIELDATA code
and is compatible with other FIELDATA machines.
The 40 bit word length in storage is made up of:
36 bit magnitude
1 bit sign
1 bit parity
1 busy-bit
1 spare-bit
40 Total in storage
BRL 1961, MOBIDIC C D & 7A , start page 0656
|
MOBIDIC C D & 7A
Mobile Digital Computer C, D, & 7A AN/MYK-1(v)
MANUFACTURER
Sylvania Electric Products, Incorporated
APPLICATIONS
MOBIDIC C, D, and 7A are mobile highly reliable, high
speed, general purpose computing systems for use by the field
commanders for combat support data processing, combat
control data processing, combat computations and logistic
computations.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 36 plus sign & parity bits
Binary digits/instruction 36 plus spare & parity bits
Instruction per word 1
Instructions decoded 52
Arithmetic system Fixed point
Assumed binary point atleft end of word, between
bits 36 & 37
Instruction type One address
Some instructions are two address, e.g. load, move,
etc.
Number range-(1 - 2-36) to +(1 - 2-36
Instruction word format
Standard Computer Instruction Word
+--------+--------+---------+-----------+-----------+----------------+
| 38 | 37 | 36 31 | 30 28 | 27 16 | 15 13 12 1 |
+--------+--------+---------+-----------+-----------+----------------+
| Parity | Spare | Op. |Index Reg. | Minor | Major |
| | | Code | Selection | Address | Address |
+--------+--------+---------+-----------+-----------+----------------+
Input-Output Instruction Word
+--------+--------+---------+-----------+-----------+----------------+
| 38 | 37 | 36 31 | 30 22 | 21 16 | 15 13 12 1 |
+--------+--------+---------+-----------+-----------+----------------+
| Parity | Spare | In- |Word-Block | Device | Storage |
| | | Out |Counter | Selec- | Address |
| | | Comd | | tion | |
+--------+--------+---------+-----------+-----------+----------------+
Automatic coding includes the Mobidic Assembly
Program.
Registers include 6 in the Central Processor, 4
Index, 2 in the Communications Converter, and 2 in
the In/Out Converter.
Instructions consist of 15 Arithmetic, 8 Transfer,
17 Logical, 3 Sense, and 9 Input-Output instructions. Index
registers are expansible to a total of 7.
ARITHMETIC UNIT
Incl. Stor. AccessExclud. Stor. Access
Microsec Microsec
Add 16 8
Mult 86 78
Div 88 80
Construction (Arithmetic unit only)
Transistors 6,O00
Arithmetic mode Parallel
Timing Synchronous
Operation Sequential
Operation is primarily sequential, however processing may
proceed duting input-output operations.
STORAGE
No. of Access
Medium No. of Words Bits/word Microsec
Magnetic Core 2 ea (4096) 40 8
total 8192
Expansible to a total of 7 magnetic core memories
of 4,096 words each.
Magnetic Tape
No. of units that can be connected 63 Units
No. of chars/linear inch 300 Chars/inch
Channels or tracks on the tape 16 Tracks/tape
Blank tape separating each record 1-1/2 Inches
Tape speed 1-150 Inches/sec
Transfer rate 300-45,000 Chars/sec
Start time 3 Millisec
Stop time 3 Millisec
Average time for experienced
operator to change reel 120 Seconds
Physical properties of tape
Width 1 Inch
Length of reel 3,600 Feet
Composition Mylar
MOBIDIC C & MOBIDIC D each have (8) tape units
while MOBIDIC 7A has 11.
INPUT
Media Speed
Paper Tape 5 channe l200 char/sec (start-stop) to
1116 inch tape 270 char/sec
Paper Tape 8 channel 200-270 char/sec 1
inch tape
Real Time Channel 120,000 char/sec
character by character
Cards 200 cards/min
OUTPUT
Media Speed
Paper Tape 5 channel 100 char/sec 1116" tape
Paper Tape 8 channel 100 char/sec 1 inch tape
Real Time 120,000 char/sec
Flexowriter 10 char/sec char by char
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type Quantity
Diodes
SG225 6,000
Transistors
2N393 30,000
Magnetic Cores 335,872
MOBIDIC is a completely Solid State computer
CHECKING FEATURES
Parity on memory transfer and input-output, over flow, non-
existant memory, non-existant instruction, non-existant device
(I/0), marginal checking, and diagnostic programs to check the
machine and indicate instructions which fail and aid in the
localization of failures.
BRL 1961, MOBIDIC C D & 7A , start page 0657
|
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 44.8 Kw 56 KVA 0.8 pf
Power, air conditioner 9.28 Kw 11.6 KVA 0.8 pf
Volume, computer 2,880 cu ft
Volume, air conditioner 72 cu ft
Area, computer 480 sq ft
Area, air conditioner 48 sq ft
Weight, computer 7,000 lbs
Weight, air conditioner 600 lbs ea
1200 lbs -Total for 1 van
2400 lbs -Total for 2 vans
Capacity, air conditioner 1 1/2 Tons
18,000 BTU/hr each
No special site requirements.MOBIDIC C, D, 7A are
mounted in two 30' vans. KVA & Kw ratings include
air conditioning for two vans. Kw and KVA maximum
for entire system. Air conditioning is for operator
comfort only. Air conditioners are two per van.
All figures are for two vans.
PRODUCTION RECORD
Number produced to date 1 - AN - MYK - 1(v)
Number in current operation 1
Number in current production 3
Time required for delivery 18 months
ADDITIONAL FEATURES AND REMARKS
Outstanding features include reggedization for field use. System operates
between -25oF to +125oF and 0 to 97% relative humidity. It is built on a
modular basis, expansible in memory (to 7), I/O converter (up to 4), and I/0
equipment (to 63).
Unique system advantages include containment in 480 sq ft. It is a
completely mobile, large scale, general purpose system. System is designed
for reliability, mobility, flexibility, fixed plant, and strategic installation,
with minimum space requirements, and minima pre-installation cost, such as
air conditioning and power. This machine is a member of the Army
FIELDATA Family of Computers. It uses the FIELDATA code and is
compatible with other FIELDATA machines.
The 40 bit word length in storage is made up of:
36 bit magnitude
1 bit sign
1 bit parity
1 busy-bit
1 spare-bit
45 Total in storage
BRL 1961, MODAC 404, start page 0658
|
MODAC 404
Mountain Systems Digital Automatic Computer
MANUFACTURER
Airborne Instruments Laboratory, Incorporated (Parent
Mountain Systems, Incorporated
Photo by Reader's Digest Association
APPLICATIONS
Statistical and business data processing, accounting,
coding and controls. System is no longer being
manufactured.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary coded decimal
Decimal digits/word 6
Decimal digits/instruction 2
Instructions decoded 8
Arithmetic system Fixed point
Instruction type One address
Number range 0 to 999,999
Programming system is designed for special application.
Operations include addition, subtraction, unit entry, bulk entry
and transfer.
ARITHMETIC UNIT
Incl Stor Access Exclud Stor Access
Microsec Microsec
Add time 25, 000 240
Construction Vacuum tubes
Basic pulse repetition rate 150 Kc/sec
Arithmetic mode Serial
Timing Asynchronous
Operation Sequential
The addition time given above is for the addition
of two 6-digit decimal numbers.
STORAGE
Access
Medium Words Digits Microsec
Magnetic Drum 20,000 120,000 25,000
Access time given aboveis average.System stoles
500,000 binary digits in 50 milliseconds access time.
BRL 1961, MODAC 404, start page 0659
|
Photo by Reader's Digest Association
INPUT
Media Speed
Paper Tape 200 char/sec
Punched Cards (Rem. Rand Tab) 4 cards/sec
OUTPUT
Media Speed
Paper Tape 200 char/sec
Punched Cards (Rem. Rand Tab) 4 cards/sec
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 1,000
Tube types 3
Crystal diodes 2,000
Separate cabinets 1
CHECKING FEATURES
Address check
POWER, SPACE, WEIGHT, AND SITE. PREPARATION
Power, computer 3 Kw
Vole, computer 120 cu ft
Area, computer 20 sq ft
Weight, computer 1,500 lbs
PRODUCTION RECORD
Reader's Digest Association
Number produced 1
Number is operation 1
COST, PRICE AND RENTAL RATES
Reader's Digest Association Approximate
cost of basic system $100,000. System is no longer
in production.
PERSONNEL REQUIREMENTS
Reader's Digest Association
Daily OperationEngineers Tech and Operators
One 8-hour shift 0 1
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Reader's Digest Association
Good time 6,000 Hours
Attempted to run time 6,188 Hours
Operating ratio (Good/Attempted to run time) 0.97
Figures based on period from Sep 55 to Jan 5T
Passed Customer Acceptance Test Sep 54
Additional features include external programming, dual entry
to memory with single address and an address check.
System no longer manufactured.
BRL 1961, MODAC 410, start page 0660
|
MODAC 410
Mountain Systems Digital Automatic Computer Model 410
MANUFACTURER
Airborne Instruments Laboratory, Incorporated
Mountain Systems Incorporated
APPLICATIONS
Business data processing. System is no longer
being manufactured.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Decimal - Excess 3
Decimal digits per word 10
Arithmetic system Fixed point
Instruction type One address
Number range 0 to 10 decimal digits
Program is stored internally and on tape.
ARITHMETIC UNIT
Exclud Stor Access
Microsec
Add time 600
Mult time 7,000
Div time 7,000
Construction Vacuum tubes, magnetic
elements and diodes
Rapid access word registers 50
Basic pulse repetition rate 150 Kc/sec
Arithmetic mode Serial
Timing Asynchronous
Operation Sequential
Computer is serial with buffer storage.
STORAGE
Access
Medium Words Microsec
Magnetic Drum 5,000 7,500
50,000 decimal digits stored.
Buffer storage in magnetic cores.
INPUT
Media Speed
Punched Tape 400 char/sec
Punched Cards 600 cards/min
OUTPUT
Media Speed
Punched Tape 60 char/sec
Punched Cards 600 cards/min
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 600
Tube types 3
Crystal diodes 3,000
Magnetic elements 1,000
Number of different plug in units 5
Number of separate cabinets 2
CHECKING FEATURES
Number checks
Address checks
Odd number check
POWER, SPACE, WEIGHT, AND SITE. PREPARATION
Power, computer 4 Kw
Volume, computer - 40 cu ft
Area, computer 20 sq ft
Weight, computer1,000 lbs
PRODUCTION RECORD
Number produced 1
Number in operation 1
System out of production.
COST, PRICE AND RENTAL RATES
Approximate cost of basic system $120,000. Price includes input
and output equipment described. Other equipment dependent upon
specific application. System is no longer being manufactured.
PERSONNEL REQUIREMENTS
One operator required during operation.
ADDITIONAL FEATURES AND REMARKS
Special translator or converter feature reads an abbreviation
on a punched card, looks up corresponding code from a list of
5,000 and punches a code number into the same card at a
reading and punching rate of 500 per minute.
High speed tallying feature performs 1,440,000' unit
additions per hour into selected registers.
Transactions, from a total of 4,000 categories, can be
read at random and added to an appropriate one of 4,000
registers.
System no longer being manufactured.
INSTALLATIONS
Readers Digest Association, Incorporated
Condensed Book Club
Pleasantville, New York
BRL 1961, MODAC 414, start page 0661
|
MODAC 414
Mountain Systems Digital Automatic Computer Model 414
MANUFACTURER
Airborne Instruments Laboratory, Incorporated (Parent)
Mountain Systems, Incorporated
APPLICATIONS
Reader's Digest Association, Incorporated Large scale
translation; statistical processing and general purpose
computation. System is no longer being manufactured.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary coded decimal
and alphanumeric
Decimal digits/word 6
Decimal digits/instruction 2
Instructions decoded 12
Arithmetic system Fixed point
Instruction typeOne address (for general
purpose applications)
ARITHMETIC UNIT
Incl Stor Access Exclud Stor Access
Microsec Microsec
Add time 8,000 288
%at time 8,000 8,000
Div time 8,000 8,000
Construction Vacuum tubes and magnetic cores
Arithmetic mode Serial
Timing Asynchronous
Operation Sequential
Concurrent for punched cards
in any of three modes.
The multiply and divide times given above include re-record
time.
STORAGE
Access
Media Words Characters Microsec
Magnetic Drum 6,000 36,000 8,000
Magnetic Drum 4 24 576
Magnetic Cores 2 12 288
INPUT
Media Speed
Punched Cards 360 cards/min
Paper Tape
Paper tape is used for report programming and testing.
OUTPUT
Media Speed
Punched Cards 360 cards/min
Paper Tape 20 char/sec
Punched cards are used for translation and paper tape for
reports.
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 2,000 (approx)
Tube types 3 (major)
Crystal diodes 3,000 (approx)
Magnetic cores 396
CHECKING FEATURES
Odd-even checks on numerical calculations are used.
POWER, SPACE, WEIGHT, AND SITE. PREPARATION
Power, computer 5 Kw
Volume, computer 240 cu ft
Area, computer 40 sq ft
Weight, computer 3,000 lbs
PRODUCTION RECORD
Number produced 1
Number in operation 1
System is no longer being manufactured.
COST, PRICE AND RENTAL RATES
Approximate cost of basic system $150,000. System
is out of production.
PERSONNEL REQUIREMENTS
Daily Operation Engineers Tech and Operators
one 8-hour shift 0 2
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Passed Customer Acceptance Test October 1956. System
is no longer being manufactured.
INSTALLATIONS
Reader's Digest Association, Incorporated
Condensed Book Club
Pleasantville, New York
BRL 1961, MODAC 5014, start page 0662
|
MODAC 5014
Mountain Data Processor Model 5014
MANUFACTURER
Airborne Instruments laboratory, Incorporated (Parent) Mountain
Systems, Incorporated
Photo by Airborne Instruments Laboratory, Inc.
APPLICATIONS
Manufacturer Business data processor. System no
longer being manufactured.
Hickok Manufacturing Company, Incorporated A
perpetual inventory, furnishing reports to the Central
Planning and Packaging Departments.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 20
Binary digits/instruction 60
Arithmetic system Decimal-binary
Instruction type One address, consisting
of two parts. Address "A" se-
lects a magnetic drum read-re-
cord head and address "B" se-
lects a particular location on
the drum.
Number range "A" ranges from 0 to 66
"B" ranges from 0 to 150
ARITHMETIC UNIT
Microsec
Add time (Includ stor access) 32
Construction Vacuum tubes, using a combination of trigger
pairs, pullers, and cathode followers. A
crystal diode matrix is also used.
Arithmetic mode A combination series-parallel shift
register is utilized.
Timing Synchronous
Operation Sequential
Three types of pulses are used to control operation.
Serial feed is by use of 5 channel paper tape.
Basic operations are addition, subtraction and
"reading out" a balance.
BRL 1961, MODAC 5014, start page 0663
|
STORAGE
Access
Media Words Digits Microsec
Magnetic Drum 10,000 50,000
Shift Register 1 5 32
Paper Tape
Paper tape is utilized for permanent storage in order to release
the magnetic drum for other purposes
The magnetic drum is 8 inches long and 7 inches in
diameter. There are 66 recording heads. The address system
is composed of a relay pyramid and an electronic counter.
INPUT
Medium Speed
Paper Tape 600 char/min
Above tape is 5-channel tape, which is prepared by an IBM
063 Card-to-Tape Converter or a Flexowriter typewriter.
OUTPUT
Medium Speed
Paper Tape 600 char/min
Direct to paper tape or via a Flexowriter typewriter.
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 535
Tube types 8
Crystal diodes 150
Separate cabinets 4
Crystal diode types used are the 1N35 and the 734116. Tube
types used are the 5965, 5915, 6AN5, 12BH7, 12AX7, 2D21,
5963, and 6AS6. All four cabinets are inter-cabled.
The IBM 063 Card-to-Tape Converter and the Flexowriter
are located in an adjoining room. The Flexowriter can be cabled
directly to the computer so as to print out in hard copy as the
computer is in operation.
CHECKING FEATURES
Checking is performed by using predetermined "heads"
and "spots" on the drum and tapes with known answers
A visual check is made.
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Volume, computer 120 cu ft
Area, computer 16 sq ft
Four cabinets 2 x 2 x 7-5 ft each
Weight, computer 600 lbs
COST, PRICE AND RENTAL RATES
Hickok Manufacturing Company, Inc-
Approximate cost of basic system $85,000
Approximate cost of Flexowriter 1,200
Rental rates of IBM 063 Card to Tape Converter
($65.00 plus $6.50 tax)/month.
System is no longer manufactured.
PERSONNEL REQUIREMENTS
Hickok Manufacturing Company, Inc. One operator and
1 clerk are utilized to operate the system on a one 8-hour
shift/week basis. One engineer is utilized for developing methods
and procedures.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Average error-free running period 30 Hours
Good time 145 Hours/Week
Attempted to run time 168 Hours/Week
Operating ratio (Good/Attempted to run time) 0.87
Figures based on the last three years.
Passed Customer Acceptance Test July 1954
System is no longer being manufactured.
INSTALLATIONS
Hickok Manufacturing Company, Incorporated
Rochester, New York
BRL 1961, MONROBOT III, start page 0664
|
MONROBOT III
Monroe Computer Model III
MANUFACTURER
Monroe Calculating Machine Company
Electronics Division
Photo by Monroe Calculating Machine Company, Electronics Division
APPLICATIONS
Air Force Cambridge Research Center
Scientific calculation.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary coded decimal
Decimal digits/word 20
Decimal digits/instruction 10
Instructions per word 1
Instructions decoded 11
Instructions used 11
Arithmetic system Fixed point
Instruction type Four address
Number range 10-10 <= n <= 1010 - 1
ARITHMETIC UNIT
Incl Stor Access
Microsec
Add time 120,000
Mult time 540,000
Div time 540,000
Construction Vacuum tubes
Basic pulse repetition rate 10 Kc/sec
Arithmetic mode Serial
Timing Synchronous
Operation Sequential
BRL 1961, MONROBOT III, start page 0665
|
STORAGE
Access
Media Words Microsec
Magnetic Drum 100 numbers 15,000
Magnetic Drum 100 instructions 15,000
INPUT
Media Speed
Keyboard Manual
Paper Tape 10 dig/sec
OUTPUT
Media Speed
Typewriter Flexowriter 10 dig/sec
Paper Tape Flexowriter;
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 800
Tube types 4
Crystal diodes 100
POWER. SPACE, WEIGHT, AND SITE. PREPARATION
Power, computer 2.5 Kw
Space, computer Desk size
Weight, computer 1,000 lbs
PRODUCTION RECORD
Number produced 1
No longer in production.
PERSONNEL REQUIREMENTS
One technician or mathematician is required to operate system.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Good time 28 Hours
Attempted to run time 35 Hours
Operating ratio (Good/Attempted to run time) 0.80
Figures based on period 1 Feb 55 to 1 Sep 56
Passed Customer Acceptance Test 1 Feb 55
Approximately 1 hour/day is required for maintenance,
therefore "attempted to run time" is considered to be 40-5, or
35 hours.
INSTALLATIONS
Air Force Cambridge Research Center
Computing Laboratory
Cambridge 39, Massachusetts
BRL 1961, MONROBOT V, start page 0666
|
MONROBOT V
Monroe Computer Model V
MANUFACTURER
Monroe Calculating Machine Company
Electronics Division
Photo by Monroe Calculating Machine Company, Electronics Division
APPLICATIONS
Computing problems normally encountered by Topographic
Troops in surveying operations.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary coded decimal
Decimal digits/word 20
Decimal digits/instruction 10
Arithmetic system Fixed point
Instruction type Four address
ARITHMETIC UNIT
Includ Stor Access
Microsec
Add time 120 approx
Mult time 540 approx
Div time 540 approx.
Construction Vacuum tubes
Basic pulse repetition rate 10 Kc/sec
Timing Synchronous
Operation Sequential
STORAGE
Access
Media Words Microsec
Magnetic Drum 300 18,000
Paper Tape
Access time on drum is for 100 twenty digit numbers. Drum is 6
inches in diameter, 20 inches long and rotates at a speed of 3,550
rev/min.
INPUT
Media Speed
Keyboard Manual
Paper Tape (Reader) 57O char/min
OUTPUT
Medium Speed
Typewriter (Flexowriter) Reader 570 char/min
Printer 400 char/min
BRL 1961, MONROBOT V, start page 0667
|
Photo by U. S. Army Corps of Engineers, Engineer Research and Development Laboratories
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Tubes 800 (approx)
Crystal diodes 1
Tube types 5814A, 5726, 5751, 58", 6005, and
5725
CHECKING FEATURES
Storage selection indicators.
POWER, SPACE, WEIGHT, AND SITE. PREPARATION
Power, computer 5 Kw
Area, computer 44 1/2 in x 72 in x 31 in Desk
Weight, computer 1,686 lbs, including Flexowriter
PRODUCTION RECORD
Number produced 1
No longer in production.
COST, PRICE AND RENTAL RATES
Manufacturer
System is no longer being manufactured.
Engineer Research and Development Laboratories
Approximate cost of basic system $86,074.
PERSONNEL REQUIREMENTS
Engineer Research and Development Laboratories One
person required for operation and one person required for
servicing unless one person is trained to perform both
operation and servicing.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Operating ratio (Good/Attempted to run time) 0.85 Passed
Customer Acceptance Test March 1955
Computer has operated for several days without any down
time; however, the only actual figure is the 2,069 hours taken
from the running time meter.
ADDITIONAL FEATURES AND REMARKS
Pre-addressed tapes
Single cycle operation where program is checked line for line.
Pre-determined automatic sequencing. Shock-mounted for van
installation; mobile.
INSTALLATIONS
U. S. Army Corps of Engineers
Topographic Engineering Department
Engineer Research and Development Laboratories
Fort Belvoir, Virginia
BRL 1961, MONROBOT VI, start page 0668
|
MONROBOT VI
Monroe General Purpose Computer Model VI
MANUFACTURER
Monroe Calculating Machine Company
Electronics Division
Photo by Monroe Calculating Machine Company, Electronics Division
APPLICATIONS
Scientific calculation.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary coded decimal
Decimal digits/Word 20
Decimal digits/instruction 10
Instructions per word 2
Instructions used 200
Arithmetic system Fixed point
Instruction type Four address
Number range +- xxxxx xxxxxx . xxxxxx xxxxx
Fixed point is centrally located
ARITHMETIC UNIT
Incl Stor Access
Microsec
Add time 135,000
Mult time 600,000
Div time 600,000
Construction Vacuum tubes and crystal diodes
Basic pulse repetition rate 10 Kc/sec
Arithmetic mode Serial
Timing Synchronous
Operation Sequential
Automatic positioning of numerical results about
the decimal point.
STORAGE
Access
Medium Words Microsec
Magnetic Drum 200 16,670 max
4,000 digits of magnetic drum storage.
INPUT
Media Speed
Keyboard Manual
Punched Tape 10 char/sec
Punched Card 17 cards/sec
Punched tape is optional to 60 char/sec.
Standard teletype or Kleinscbmidt units for tape processing.
BRL 1961, MONROBOT VI, start page 0669
|
Photo by Monroe Calculating Machine Company, Electronics Division
OUTPUT
Media Speed
Printed Copy 10 char/sec
Punched Tape 10 char/sec
Punched Card 17 char/sec
Standard teletype or Kleinschmidt units. 60 char sec. Punched tape and
punched card is optional.
CHECKING FEATURES
Parity checks MAID (Monrobot Automatic Internal Diagnosis) and
dual arithmetic and control units.
INSTALLATIONS
Several systems are at U. S. Air Force installations in Japan and
Germany. These are under Monroe maintenance. The systems installed in
the United States are not under Monroe maintenance.
Howard University
BRL 1961, MONROBOT IX, start page 0670
|
MONROBOT IX
Monroe Calculating Machine IX
MANUFACTURER
Monroe Calculating Machine Company
APPLICATIONS
System is used primarily for billing, and invoice writing.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 62 bits
A plugboard program is used.
Instructions decoded 16
Arithmetic system Fixed point
Instruction type One address
Number range 0 to 1018
System has 15 registers.
ARITHMETIC UNIT
Incl. Stor. Access Exclud. Stor. Access
Microsec Microsec
Add 12,000 3,000
Mult 13,500 per decimal digit of
multiplier
Div 54,000 per decimal digit of
quotient
Construction (Arithmetic unit only)
Vacuum-Tubes 64
Diodes 1,000
Arithmetic mode Serial
Timing Synchronous
Operation Sequential
Multiplication is accomplished by manual input of the
multiplier digits. Therefore, actual speed is operator limited.
During division the quotient digits are printed, and the
actual speed is therefore printer limited.
STORAGE
No. of No. of Access
Medium Words Digits Microsec
Magnetic Drum 15 18 decimal dig 12,500 avg
INPUT
Media Speed
Electric Typewriter 10 char/sec
Flugboard 10 char/sec
Plugboard is used for constants and alphabetic characters.
Typewriter input is operator limited.
OUTPUT
Media Speed
Electric Typewriter 10 char/sec
Numerical and alphabetic
IBM 024 Card Punch 10 char/sec
Numerical
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type Quantity
Tubes
Primarily 5965 74
Diodes
Primarily 1N636 1,000
POWER, SPACE, WEIGHT, AND SITE PREPARATION
KVA, computer 0.75
Volume, computer 32 cu ft
Area, computer 10.6 sq ft
Floor loading 40 lbs/sq ft
150 lbs concen max
Weight, computer 450 lbs
Site preparation not necessary.
PRODUCTION RECORD
Number produced to date 70
Number in current operation 70
Time required for delivery 3 - 6 months
COST, PRICE AND RENTAL RATES
Computer with Typewriter $9,650
List of additional equipment
IBM (024) Intercoupler $ 500
(IBM 024 - see IBM price list)
90-day guarantee parts and labor. Service con-
tract price is $500.
PERSONNEL REQUIREMENTS
One clerk is required for each 8-hour shift.
Ordinary typists are trained at customer location in one day.
BRL 1961, MONROBOT IX, start page 0671
|
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Ambient temperature to 130oF
Voltage margins, +25%
Pre-aged tubes used throughout.
ADDITIONAL FEATURES AND REMARKS
Computer has fewer tubes (74) than any other product known to us.
Calculation is so fast operator experiences no delay. System handles
fractions of any kind, feet, inches, gross, dozen, board feet, etc. Foreign
currency such as pounds, shillings, pence, are handled. Step-rate utility
billing is automatically performed.
System operates as a decimal machine externally. Input and output
conversion are automatic. Decimal shift left and shift right instructions make
this possible.
FUTURE PLANS
Punched tape output planned soon.
BRL 1961, MONROBOT XI, start page 0672
|
MONROBOT XI
Monroe Calculating Machine Mark XI
MANUFACTURER
Litton Industries
Monroe Calculating Machine Division
Photo by Monroe Calculating Machine Division
APPLICATIONS
The Monrobot Mark XI is a stored-program, general
purpose electronic business computer capable of
operation with a wide variety of input-output equip-
ment.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 32 including sign
Binary digits/instruction 16
Instructions/word 2
Instructions decoded 27
Instructions used 27
Arithmetic system Fixed point; programmed
floating point
Instruction type One address
Number range 0 to 231 - 1 or 0 to +- 109 or
0 to +- 2, 147, 483, 647
Instruction word format
+---------------+-----------------+
| 16 11 | 10 1 |
+---------------+-----------------+
| Instruction | Address |
+---------------+-----------------+
ARITHMETIC UNIT
Incl. Stor. Access Exclud. Stor. Access
Microsec Microsec
Add 9,000 3,000
Mult 34,000 28,000
Div 500,000 500,000
Division is programmed.
Construction (Arithmetic unit only)
Transistors 190
Diodes 1,675
Arithmetic mode Serial
Timing Synchronous
Operation Sequential
BRL 1961, MONROBOT XI, start page 0672
|
STORAGE
No. of No. of Average Access
Medium Words Digits Microsec
Magnetic Drum 1,024 32,768 6,000
INPUT
Media Speed
Punched Paper Tape 20 char/sec
Electric typewriter 10 char/sec
16-key numeric keyboard 10 char/sec
80-column card 16 col/sec
Teletypewriter 10 char/sec
The machine can accomodate any three of the above input
devices simultaneously. Punched paper tape may be any code, 5
to 8 level. Quoted input and output speeds include conversion
to and from binary as well as translation of any tape language
to machine code. Higher speeds are possible using pure binary
input and output.
OUTPUT
Media Speed
Punched Paper Tape 20 char/sec
Electric Typewriter 10 char/sec
80-column Card 16 col/sec
Teletypewriter 10 char/sec
The machine can accomodate any three of the above output
devices simultaneously. Punched paper tape may be any code, 5
to 8 level.
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type Quantity
Tubes
5727 10 - 30 (10 tubes/output device)
Diodes
Primarily 1N636 2,300
Transistors
Primarily 2N412 383
CHECKING FEATURES
Parity check on input and output. Parity
may be omitted.
Action taken on parity failure depends upon program. With
Teletype or other parity-less codes, parity is not used.
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Power, computer 0.850 Kw 0.940 KVA 0.9 pf
Volume, computer 48 cu ft
Area, computer 15 sq ft
Room size 10 ft x 10 ft
Floor loading 30 lbs/sq ft
100 lbs concen max
Weight, computer 375 lbs
System requires 15 amp, 110 volt, AC, 60 cps line.
PRODUCTION RECORD
Number produced to date 7
Number in current operation 6
Time required for delivery 6 - 9 months
COST, PRICE AND RENTAL RATES
Cost of computer with operator desk,
1 typewriter, 1 tape reader, and 1
tape punch $24,500
Additional Equipment
16-key numeric keyboard 300
Tape Reader 1,250
Tape Punch 700
Typewriter 2,350
Buffer for third device 600
Above prices are approximate.
Monthly rental of computer with operator desk,
1 typewriter, 1 tape reader, and 1 tape punch,
including service $700
Maintenance contracting is $1,200/year after
90-day service guarantee.
PERSONNEL REQUIREMENTS
Manufacturer makes a programmers' school available to users.
One operator is required for each 8-hour shift. Virtually no
operator training is required.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Conservative solid-state design assures long life and wide
margins under all but the most extreme operating conditions.
Pluggable printed circuit boards provide trouble-free operation as
well as ease of maintenance. Monrobot XI operates with full
+-25% voltage margins at 110oF ambient.
ADDITIONAL FEATURES AND REMARKS
The Monrobot Mark XI accepts alpha-numeric information
in any code from up to three independent input devices and can
output information to any combination of three independent
devices.
System can simultaneously prepare independent output
documents in any format, and can merge transaction and
unit record input tapes in any format.
BRL 1961, MONROBOT MU, start page 0674
|
MONROBOT MU
Monroe Multiple-Unit General Purpose Computer
MANUFACTURER
Monroe Calculating Machine Cams.
Electronics Division
Photo by Monroe Calculating Machine Company, Electronics Division
APPLICATIONS
Item inventory and monetary accounting.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary coded decimal
and sexadecima1
Binary digits/word 96
Decimal digits/instruction 12
Instructions per word 2
Instructions decoded 36
Instructions used 36
Arithmetic system Fixed point (arbitrarily
located)
Instruction type Three address (modified)
Number range Variable
Words may be made up of either numeric or alphanumeric
characters.
ARITHMETIC UNIT
Includ Stor Access
Microsec
Add time 8,000
Mult time 68,000
Div time 77,000
Construction Vacuum tubes and crystal
diodes
Basic pulse repetition rate 60 Kc/sec (rapid access)
104 Kc/sec (general storage)
Arithmetic mode Serial
Timing Synchronous
Operation Sequential
BRL 1961, MONROBOT MU, start page 0675
|
STORAGE
Access
Media Words Microsec
Magnetic Drums 20,000/drum 25,000 (avg)
(general storage)
Magnetic Drum 10 (rapid access) 1,600
Magnetic Tape (2) 12,000/unit
The large capacity drums are for general storage. and utilize
saturable core reactors for track selection. The number of drums
utilized is based upon application requirements.
INPUT
Media Speed
Keyboard (Flexowriter) 10 char/sec
Keyboard Model 28 6 char/sec
Teletype 12 Units)
Paper Tape (Ferranti) 200 char/sec
Magnetic Tape 400 char/sec
OUTPUT
Media Speed
Paper Tape (Flexowriter) 10 char/sec
Printed Page (Flexowriter) 10 char/sec and
Model 28 Teletype)
Magnetic Tape 400 char/sec
CHECKING FEATURES
Parity checks MAID (Monroe Automatic Internal Diagnosis)
System used for malfunction detection and location.
INSTALLATIONS
System was installed for the U. S. Air Force under
Contract No. AF33(616)-2158.
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