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BRL 1961, IBM 701, start page 0390
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IBM 701
IBM 701 Data Processing System
MANUFACTURER
International Business Machines Corporation
Photo by International Business Machines Corporation
APPLICATIONS
Manufacturer
Scientific, commercial, and engineering data processing.
U. S. Naval Ordnance Test Station, China Lake
Scientific data processing
Douglas Aircraft Company, Tulsa Located at the Douglas
Aircraft Company, Inc., 2000 North Memorial Drive, Tulsa,
Oklahoma, and at A-250, Santa Monica, California, the systems
are used for strength analysis, trajectories, aerodynamic
stability, aerodynamic performance, dynamic response, thermo
dynamic analysis, weight control, and propulsion analysis.
United Aircraft Corporation The United Aircraft
Corporation provides a central computing facility located at the
Research Department for the solution of engineering and research
problems. It services the three UAC Divisions: Pratt and Whitney
Aircraft, Sikorsky Aircraft, and Hamilton Standard which are
engaged in the design and manufacture of aircraft engines,
helicopters, propellers and other aircraft equipment.
PROGRAMMING AND NUMERICAL SYSTEM
Internal number system Binary
Binary digits/word 18 or 36 per data word
Binary digits/instruction 18
Instructions per word 2
Instructions decoded 33
Arithmetic system Fixed point
Instruction type One address
Number range -(235 - 1) < N < (235 - 1)
Instruction word format
+-----+--------------+--------------+
| +- | Operation | Operand |
+-----+--------------+--------------+
| 0 | 1 5 | 6 17 |
+-----+--------------+--------------+
Symbolic routines and floating point interpretive codes are
available.
There are 3 arithmetic registers, accumulator, multiplier-
quotient, and memory register.
BRL 1961, IBM 701, start page 0391
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Photo by General Motors Corporation
ARITHMETIC UNIT
Incl Stor Access Exclud Stor Access
Microsec Microsec
Add 60 or 36 48 or 24
Mult 456 444
Div 456 444
Construction (Arithmetic unit only)
Vacuum tubes 4,000
Diodes 12,800
Arithmetic mode Parallel
Timing Synchronous
Operation Sequential
STORAGE
Manufacturer
No. of No. of Access
Media Words Digits Microsec
Magnetic Core 4,096 40,960 12
Magnetic Drum 8,192 or 16,384 50,000
Magnetic Tape Up to 900,000 words 10,000
serially
No. of units that can be connected 10 Units
No. of char/linear inch of tape 200 Char/inch
Channels or tracks on the tape 7 Tracks/tape
Blank tape separating each record 0.75 Inches
Tape speed 75 Inches/sec
Transfer rate 15,000 Char/sec
Start time 10 Millisec
Stop time 10 Millisec
Average time for experienced operator to change reel of
tape 30 - 60 Seconds
Physical properties of tape
Width 0.5 Inches
Length of reel 200 - 2,400 Feet
Composition Acetate or mylar
Mylar is DuPont's registered trademark for its polyester film.
Douglas Santa Monica and Douglas Tulsa
No. of No. of Access
Media Words Digits Microsec
Magnetic Core 4,096 36 12
Magnetic Drum 8,192 36 1,280
Magnetic Tape 6 reels
INPUT
Manufacturer
Media Speed
Card Reader 150 cards/min
Magnetic Tape (IBM 726) 6,000 char/sec
This speed corresponds to 10,000 digits/sec.
Magnetic Tape (IBM 727) 15,000 char/sec
This speed corresponds to 25,000 digits/sec.
Cards to Magnetic Tape 250 cards/min
Douglas Santa Monica and Douglas Tulsa
Cards 150 cards/min
Magnetic Tape 100 char/in, 75 in/sec
BRL 1961, IBM 701, start page 0392
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Photo by University of California Radiation Laboratory
OUTPUT
Manufacturer
Media Speed
Card Punch 100 cards/min
Line Printer 150 lines/min
Cathode Ray Tube Display 8,300 points/sec
Magnetic Tape 726 6,000 char/sec
Magnetic Tape to Card 100 cards/min
Magnetic Tape to Line 150 lines/min
Printer
Douglas Santa Monica and Douglas Tulsa
Printer 150 lines/min
Cards 100 cards/min
Magnetic Tape 100 char/in, 75 in/sec
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Type Quantity
Tubes 4,000
Diodes 12,800
Magnetic Cores 147,456 (Core Storage)
CHECKING FEATURES
Tapes (727) - Longitudinal & transverse parity check
Line Printer - Echo checking for each character
Card Reader - Reads card twice
Card Punch - Checks columns for double punch & blank
column
Arithmetic & Logical Unit - Overflow, divide check,
parity checks.
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Manufacturer
Power, computer 84.0 KVA
Area, computer 1,200 to 3,000 sq ft
Room size 1,600 - 3,400 sq ft
Capacity, air condit 20 - 40 Tons
Weight, computer 20,516 lbs
Physical planning manual made available.
Weight (lbs) KVA
Main Frame 2,850 34.4
Punched Card Recorder 720 0.7
Line Printer (Wheel Type) 2,795 3.1
Magnetic Drum 1,480 9.9
Cathode Ray Tube 2,445 11.8
Power Frame No. 1 2,810 5.8
BRL 1961, IBM 701, start page 0393
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Power Frame No. 2 2,750 5.8
Power Distribution Unit 1,230 1.2
Magnetic Tape Unit (726) 1,270 4.6
Magnetic Tape Control Unit 1,636 6.0
Punched Card Reader 530 0.7
U. S. Naval Ordnance Test Station, China Lake
System requires 80 Kw, 136 KVA, 1,404 cu ft, 1,400
sq ft. The system area is 44 by 27 ft and weighs
40,050 lbs, including peripheral equipment.
The above power, space and weight does not include
supporting machines such as key punches, reproducers,
and sorters. This equipment would add 8 KVA and
8,000 lbs.
Douglas Santa Monica and Douglas Tulsa
Power, computer 65.3 Kw 87.6 KVA
Volume, computer 729.4 cu ft
Area, computer 143.6 sq ft
Room size, computer 1,368 sq ft
Room size, air condi 1,100 sq ft
Floor loading 16 lbs/sq ft
200 lbs concen max
Capacity, air conditioner 38 Tons
Weight, computer 21,690 lbs
Built-up air handling system - two units, 40 hp each, capable of
approximately 38 tons cooling.
Sealed area; a/c ducts installed with 500 RCE/sink for each component;
raised floor (steel platform; a/c unit and airfilter installed;
motor-generator set
with transformer and controls installed.
PRODUCTION RECORD
Manufacturer
Number produced to date Over 18
There are no 701 systems in production at the present time.
Available for new orders only when released from present user.
COST, PRICE AND RENTAL RATES
Manufacturer
Monthly Base Pur-
Charge chase Price
701 Central Processing Unit $5,000 $230,000
711 Card Reader 400 16,350
716 Printer 1,200 54,200
721 Card Punch 600 25,000
726 Magnetic Tape Unit 850 42,100
727 Magnetic Tape Unit 550 18,200
731 Magnetic Drum Storage 1,400 87,450
736 Power Supply 1,000 57,400
737 Magnetic Core Storage 3,700 192,400
740 CRT Recorder 2,450 96,000
741 Power Supply 1,000 57,400
746 Power Distribution Unit 1,100 52,000
753 Tape Control 2,350 80,000
780 CRT Display 400 16,000
Since this machine is no longer in production, the Base Purchase Price is
used in computing the Discounted Purchase Price based on the age of the
installed machine. A published discount schedule is available from IBM.
Maintenance contract details available.
U.S. Naval Ordnance Test Station, China Lake
Rental rate for basic system is $21,500/month.
Rental rate for additional equipment $8,550/month.
Douglas Tulsa
Standard 701 components $17,220/month.
Third 726 Tape Unit (two reels $850/month.
Maintenance/service is included in rental.
Douglas Santa Monica Main frame, 6 magnetic tape units, 1 reader, 1
punch, and 1 printer $17,220/month. Maintenance/service is included in
rental.
PERSONNEL REQUIREMENTS
Manufacturer Education training, program testing, technical assistance
on all phases is available from manufacturer.
U. S. Naval Ordnance Test Station, China Lake
For three 8-hour shifts 6 engineers and 19 technicianoperators
are utilized. Approximately 9 mathematics aides, 10 mathematicians and 20 to 25
persons from outside the branch, program and ran their own problems.
Douglas Tulsa
One 8-Hour Shift
Supervisors 1
Analysts 6
Clerks 1
Operators 1
Operation tends toward closed shop.
Own course stresses understanding of existing programs and new
programming under close supervision.
Douglas Santa Monica
One 8-Hour Shift
Supervisors 1
Analysts 2
Clerks 1
Operators 2
Operation tends toward closed shop.
Own course followed by on-the-job training.
United Aircraft Company
Two IBM Type 704 and one IBM Type 701 Computers are operated on a 24
hour, six-day week. Three CPC's and three Burroughs E101's are operated on
an
8 hour, five-day week.
The Laboratory is staffed by 51 analysts, 11 operators, and 24 aides. Non-
computing personnel also program for all calculators.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
Atomic Energy Commission, University of California Radiation Laboratory
System accepted 26 Apr 54; the average error-free running period is 6.2
hours; good time is 3,032 hours and the attempted to run time is 3,587 hours,
resulting in an operating ratio of 0.85; the average error free running time is
calculated by dividing the total hours less the total scheduled maintenance less total
unscheduled maintenance less the loss time claimed by operator all by the
total number of hours of down and lost time reported. The above figures are for
the period January 55 to June 55 when operating 24 hours/day.
General Motors Corporation
System accepted in Apr 54; average error
free running period is 4.5 hours derived from the records for 1 month; good
time of 1,067 hours and attempted to run time of 1,154 hours yielding an
operating ratio of 0.92 for a four month period.
Douglas Tulsa
Average error free running period 8 Hours
Good time 39.16 Hours/Week (Average
Attempted to run time 39.96 Hours/Week (Average
Operating ratio (Good/Attempted to run time 0.98
Above figures based on period 1 Jan 60 to 31 Mar 60
Passed Customer Acceptance Test 8 Mar 60
Time is available for rent to outside organizations.
BRL 1961, IBM 701, start page 0394
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Douglas Santa Monica
Average error free running period 8 Hours
Good time 40 Hours/Week (Average
Attempted to run time 42 Hours/Week (Average
Operating ratio (Good/Attempted to run time) 0.95
Above figures based on period from Jan 59 to Jul 60
Passed Customer Acceptance Test Apr 56
Time is available for rent to outside organizations.
Lockheed Aircraft Corporation
Systems accepted on 14 May 53 and 15 Jul 54; average
error free running periods of 3-4 hours on one and
1 1/2 hours on the other; good time of 74.4% and 80%
where good time is considered as actual production
and the remaining 25.6% and 20% respectively, con-
sists of preventive maintenance, breakdown, machine
re-work and idle time. The average error free running
period is reduced considerably when tapes are used
frequently. Short runs are made wherever possible
(1-5 hours), but the same program is run for as long
as 12 hours and would run longer if time permitted.
United Aircraft Corporation, Research Dept.
Average error free running period 2 Hours
Good time 2,667 Hours
Attempted to run time 3,473 Hours
Operating ratio (Good/Attempted to run time) 0.77
Figures based on period 1 Feb 56 to 30 Sep 56
Passed Customer Acceptance Test 5 Oct 53
Attempted to run time includes calculation, checkout, machine
error, unscheduled maintenance, and scheduled maintenance time.
The scheduled maintenance for the above period was 367.96 hours
and the unscheduled maintenance was 290.75. These two figures
should be subtracted from the above "Attempted to run" figure.
ADDITIONAL FEATURES AND REMARKS
Manufacturer
Outstanding features include high arithmetic speed and low
cost. Unique system advantages are two instructions stored per
word and 18 and 36 bit data words.
Tape Storage
Acetate Base Tape
Storage for frequent usage. Relative humidity 40 to 60%
Temperature 65 to 80oF.
Should the tape be exposed to atmospheric conditions
outside the above limits for more than four hours, the following
item specifications would apply:
Storage for infrequent usage. Temperature 40 to 120oF.
The tape must be placed in a dust proof container and
hermetically sealed in a plastic bag. Before re-using, the tape must
be reconditioned by allowing it to remain in the conditioned -
atmosphere for a length of time equal to the time it was away.
Twentyfour hours reconditioning is necessary if the tape is
removed for longer than twenty-four hours.
Mylar Base Tape
Storage for frequent or infrequent usage. Relative humidity
0 to 80%. Temperature 40 to 120oF.
The tape should be stored in a dust proof container. Should
the tape be exposed to atmospheric conditions outside the above
limits for more than four hours, it must be reconditioned by
allowing it to remain at the given condition for a length of time
equal to the time it was away. Twenty-four hours reconditioning is
necessary if the tape is removed for longer than twenty-four hours.
The upper limit on humidity is given to prevent the
formation of fungus and mold growth. This limit may be
exceeded by hermetically sealing the tape in a plastic bag.
General Precautions
The tape should not come in contact with magnetic
material at any time and should never be subjected to strong
magnetic fields. Either of these can cause the loss of information
or the introduction of noise.
When shipping magnetic tape, the reel should be placed in
a dust proof container and hermetically sealed in a plastic bag.
Additional support should be obtained by enclosing in an
individual cardboard box.
A limited number of 701 Systems were produced for
specific requirements, many installations of which
have changed to the IBM 704 System.
General Motors Corporation
Two interpretive systems are used, Speed Co and ACOM.
Speed Co is 3-address while ACOM is 2-address. Both
provide for floating point arithmetic, transcendental
functions, In-Out operations, B-boxes, and tracing
all of which aid in coding and checkout.
Lockheed Aircraft Corporation
A general purpose system called FLOP, a contraction
of Floating Octal Point, was developed at Lockheed
by members of the Digital Computing Staff.
FLOP converts the 701 into an entirely different ma-
chine, one which performs all its operations in a
"floating octal" system, but also permits all the
normal 701 operations to be executed in fixed binary.
The floating octal operations performed by the system
are add, subtract, multiply, divide (all with real
or complex numbers), 1098 x, 8x, sin x, sin-lx, and
square root. The system also provides certain logi-
cal operations and control of the input-output devices
in three number systems: binary, octal, and floating
decimal.
This system was developed in order to obtain a mini-
mun of elapsed time from when a new problem first
enters the department to when answers are obtainable.
FUTURE PLANS
U. S. Naval Ordnance Test Station, China Lake A
modofication has been made to the system to allow
asynchronous digital data to fill the entire storage unit at one
time. Such data are fed from magnetic tape containing the
digitalized version of analog information originating at the test
equipment. The analog to digital conversion is done as a
separate step, prior to entering the data into the computer.
INSTALLATIONS
U. S. Naval Ordnance Test Station China
Lake, California
United States Weather Bureau
Washington, D. C.
Boeing Aircraft
Wichita, Kansas
Douglas Aircraft Company, Incorporated E1
Sequndo, California
Douglas Aircraft Company, Incorporated
2000 North Memorial Drive Tulsa, Oklahoma
Douglas Aircraft Company, Incorporated 3000
Ocean Park Blvd. Santa Monica, California
General Motors Corporation
Detroit, Michigan
BRL 1961, IBM 701, start page 0395
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Glenn L. Martin Company
Baltimore 3, Maryland
Lockheed Aircraft Corporation
Burbank, California
United Aircraft Corporation
East Hartford 6, Connecticut
University of California
Radiation Laboratory
Berkeley 4, California
BRL 1961, IBM 702, start page 0396
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IBM 702
IBM 702 Electronic Data Processing Machine
MANUFACTURER
International Business Machines Corporation
Photo by International Business Machines Corporation
APPLICATIONS
Manufacturer System is used for commercial (cost, inventory,
production, accounting, sales, billing, etc) and for scientific (engineering
design, mathematical models) applications.
U. S. Navy Aviation Supply Office Commercial,
inventory control.
Bank of America Located at 500 Howard Street, San Francisco, the
system is used for real estate loan accounting, installment loan accounting,
accounts receivable accounting, corporate trust accounting, bond investments
accounting, branch clearings (inter-branch debit and credit accounting), and
branch activity surveys (personnel requirements).
Chrysler Corporation Service Parts Warehouse Invoicing, cost of
sales and inventory control.
Commonwealth Edison Company of Chicago Customer
billing and accounting.
General Electric Company, Hanford Atomic Products Provide general
data processing and computing service
to entire plant, both commercial and scientific work.
PROGRAMMING AND NUMERICAL SYSTEM
Manufacturer
Internal number system Binary coded decimal and
alphabetical
Digits per word Variable
Digits per instruction 5 characters
Instructions per word No words
Instructions decoded 32
Arithmetic system Fixed point
Floating point is programmable.
Instruction type One address
Number range +- 256 decimal digits
Instruction word format
+------------+-----+-----+-----+-----+
| X | X | X | X | X |
+------------+-----+-----+-----+-----+
| Operation | Address |
+------------+-----------------------+
Automatic built-in subroutines include store for print.
Automatic coding consists of the Autocoder System.
BRL 1961, IBM 702, start page 0397
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Photo by International Business Machines Corporation
There are two 256 - character accumulators.
The machine is not a fixed word length system. It is possible
to have both variable field and variable record lengths.
Consequently there are no "words". The characters are
alphanumeric. Five characters are required to make up an
instruction.
ARITHMETIC UNIT
The time required to add is 23 microseconds, excluding the
storage access time. The time required to multiply is given by
23 [Np (Nc + 4) + 1 ] + 115 microseconds.
The time required to divide is given by
23 [ 10 + Nd + (Nd - Nr)(7.5K + 15) ] + 115 micro-
seconds. Where
Np = number of multiplier digits
Nc = number of multiplicand digits
Nd = number of dividend digits
Nr = number of divisor digits
K = Nr if Nr > 8 and K = Nr + 0.005(8 - Nr) if Nr < 8.
The arithmetic unit is constructed of vacuum tubes, crystal
diodes and magnetic cores and operates serially by binary coded
decimal character and parallel by bit.
Arithmetic mode Serial
Timing Synchronous
Operation Sequential
STORAGE
Manufacturer
Alphanumeric Access
Media Characters Microsec
Magnetic Core 10,000 17
Magnetic Drum 60,000 8,120+4ON
Magnetic drum has 300 sections of 200 characters
each. N = number of characters.
Magnetic Tape 5,760,000 10,140+67N
No. of units that can be connected 10 Units
No. of char/linear inch of tape 200 Char/inch
Channels or tracks on the tape 7 Tracks/tape
Blank tape separating each record 0.75 Inches
Tape speed 75 Inches/sec
Transfer rate 15,000 Char/sec
Start time 10 Millisec
Stop time 10 Millisec
Average time for experienced
operator to change reel of tape 60 Seconds
Physical properties of tape
Width 0.5 Inches
Length of reel 200-2,400 Feet
Composition Acetate or Mylar
Mylar is Dupont's registered name for its polyester film.
U. S. Navy Aviation Supply Office System has
magnetic core storage unit in lieu of electrostatic.
BRL 1961, IBM 702, start page 0398
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Photo by International Business Machines Corporation (Poughkeepsie)
Bank of America
No. of No. of Access
Medium Words Digits Microsec
Magnetic Core Memory Variable 20,000 17
Not a fixed word length system. Variable field
lengths and variable record lengths are possible.
Characters are alpha-numeric.
Chrysler Corporation Service Parts Warehouse
System has magnetic core and magnetic drum.
General Electric Company, Hanford Atomic Products
System has magnetic core, magnetic drum, and magnetic
tape storage.
INPUT
Manufacturer
Media Speed
Magnetic Tape
Card Reader 250 cards/min
Operator Console Manual
Magnetic 25,000 char/sec
U. S. Navy Aviation Supply Office
Magnetic tape unit operates at 200 char/inch and 75
inches/sec. Card reader operates at 250 cards/min
at 80 char/card.
Bank of America
Media Speed
Magnetic Tape 75 inch/sec 1/2" 7-channel tape
Punched Card 250 cards/min 80 char/card
Card to magnetic tape conversion done on "off-line"
basis.
General Electric Company, Hanford Atomic Products
Operation
Card reader at 250 cards/min with off-line card to
tape conversion. Magnetic tape speed is (10,000 +
67N) microseconds, where N is the number of characters.
OUTPUT
Manufacturer
Media Speed
Magnetic Tape
Card Punch 100 cards/min
Line Printer 150 lines/min
500 lines/min
Typewriter 1,000 lines/min
600 char/min
Magnetic Drum 25,000 char/sec
The IBM 1401 Data Processing System may be used for
peripheral operations such as card-tape, tape-printer,
and card editing at speeds of: card reading- 800
cards/min, card punching-250 cards/min and printing-
600 lines/min.
BRL 1961, IBM 702, start page 0399
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Photo by General Electric Company Richland
U. S. Navy Aviation Supply Office
System has all above output systems.
Bank of America
Media Speed
Magnetic Tape 75 inch/sec 1/2" 7-channel tape
Punched Card 100 cards/min 80 char/card
Typewriter 600 char/min
Printer 500 lines/min 120 print positions
Magnetic tape to card and tape
to printer conversio done on
"off-line" basis.
General Electric Company, Hanford Atomic Products
Magnetic tape to card and tape to printer conversion done on
"off-line" basis.
CIRCUIT ELEMENTS OF ENTIRE SYSTEM
Manufacturer
Tubes 10,000
Tube types 10
Crystal diodes 17,000
Complement changes with configuration.
Bank of America
In addition to the above, the system has 165,000 magnetic
cores. It utilizes tube types 6211, 5965 and 5687.
CHECKING FEATURES
Instruction
During the execution of an instruction, a character
code error, an invalid operation part transfer, or an operation
part interpretation, may be detected and indicated.
Machine
The machine check indicator is turned on when a
character code error is detected during the execution of all
instructions (except write, write and erase, read, and read check in
which information is read from accumulator storage or memory.
Read-Write -checks the transmission of data from all input units
to memory. It also checks the transmission of all output data
from memory to the drum, tape unit, card punch record storage,
printer record storage, and typewriter.
Printer-Punch
This indicator reflects any error when
information is punched in a card or when printed on the printer.
Overflow The overflow check indicator is turned on during an
add or subtract operation when the number of digits in the result is
greater than the number of digits in the longer of the original
fields. An overflow is indicated as a result of a round off operation
if a
BRL 1961, IBM 702, start page 0400
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Photo by Commonwealth Edison Company, Chicago
carryover is made out of the highest order position of the
original accumulator storage field.
Sign
The indicator turns on
when a field addressed by an arithmetic instruction does not
have plus or minus zoning over the right hand digit.
Bank of America
The following checks are made:
Odd-even redundancy Read-write operations Longitudinal
redendancy on magnetic tape processing.
General Electric Company Hanford Atomic Products
Operation Parity check using 7 bit code with only six bits of real
data is used for all internal operations and all input-output. All
corrective action can be programmed or machine can be set to
stop on error at the programmer's discretion. Normally
operated with internal error detection set to stop, but with input-
output error correction programmed.
BRL 1961, IBM 702, start page 0401
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Photo by Bank of America, San Francisco
POWER, SPACE, WEIGHT, AND SITE PREPARATION
Manufacturer
Power Current Heat Weight Size (Nearest Inch)
Type Name Qty. Kw Amps. B.T.U. lbs. Width Length Height
702 Central Processing Unit 1 25.0 87 85,000 5,291 147 139 63
Main Power Unit 1 2,961 34 61 66
Console 1 508 35 61 46
712 Card Reader 1 5.0 17 17,000 1,053 43 28 49
756 Card Reader Control Unit 1 1,712 27 57 64
717 Printer 1 9.0 31 30,700 2,244 30 64 47
757 Printer Control Unit 1 1,866 27 57 64
722 Card Punch 1 7.6 26 26,000 1,176 25 53 50
758 Card Punch Control Unit 1 1,866 27 57 64
732 Drum Unit 1 6.9 24 23,600 1,775 27 62 64
Drum Power Supply 1 1,646 27 40 64
727 Tape Unit 10 13.0 45 44,200 9,110 26 24 66
752 Tape Control Unit 1 8.4 29 28,700 1,636 27 57 64
---- --- ------ ------
74.9 259 255,200 32,844
Approximately one Ton of air conditioning required for 12,000 B.T.U.
U. S. Navy Aviation Supply Office
System requires 75 Kw, occupies 19,494 cu ft, 2,052
sq ft, measuring 57 ft by 36 ft by 9 1/2 ft. The
system weighs 33,000 lbs. The air conditioning consists
of a 40-Ton unit and a 15-Ton unit, occupying 3,168 cu
ft of space and 288 sq ft of area, measuring 12 ft by 24 ft by
11 ft.
BRL 1961, IBM 702, start page 0402
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Bank of America
System requires 93 Kw, 208V, 3 phase, 60
cycles/sec, 16,000 cu ft, 2,500 sq ft, measuring 55 ft by 45 ft by 8 ft. Air
conditioner requires 68 Kw, 2,552 cu ft, 319 sq ft, measures 29 ft by 11 ft
by 8 ft, and has a capacity of 60 Tons. The air conditioning equipment designed
to accommodate requirements for comfort conditioning of engineering, mail
handling, tabulating, and office personnel and space. Building modifications
were required, since neither building was specifically designed for computer
operations. False ceilings, plenums and partitions were installed for air
supply, negative pressure, and temperature control. Power distrubution is
provided by underfloor conduit and pull boxes.
General Electric Company Hanford Atomic Products
Power service to
system is 300 amps, 208 volts, 3 phase for computer and 105 amps, 440
volts, 3 phase for air conditioner. The machine room is 40 ft by 60 ft and the air
conditioner requires an area of 20 by 20 ft. The air conditioner capacity
is 52 Tons. Power consumption has been stated in terms of service supplied rather
than actual machine consumption. The space required is a function of the amount
of engineering and observation space and other miscellaneous working areas
which are considered necessary or desirable to have in addition to the actual
cubic footage of the equipment.
PRODUCTION RECORD
Manufacturer
Number produced Over 13
There are no 702 Systems in production, at the present time. A limited
number of 702's were produced. The successor to the 702 was the IBM 705.
COST, PRICE AND RENTAL RATES
Manufacturer
Base
Monthly Purchase
Type Name Rental Price
702 CPU (Model l) $6,900 $358,800
712 Card Reader 750 36,800
717 Printer 1,400 55,000
720 Printer (Model 1) 1,400 56,900
722 Card Punch 800 43,300
727 Magnetic Tape Unit 500 18 200
730 Printer (Model 2) 3,900 210,500
732 Magnetic Drum Storage 2,300 113,000
735 Printer Control 600 32,500
742 Magnetic Drum Power 500 26 500
743 Power Supply 1,000 52,000
752 Tape Control 550 28 600
756 Card Reader Control 300 18,000
757 Printer Control 650 44,000
758 Card Punch Control 600 36,000
760 Control and Storage 2,500 111,000
There is no predetermined grouping of equipment. Combinations of above are
available based on requirements.
The base purchase price is used in computing the discounted purchase
price based on the age of the installed machine. A published discount
schedule is available from IBM.
Maintenance contract available.
U. S. Navy Aviation Supply Office Prime shift monthly rental rate for
system is $30,200.
Bank of America Rental rate is $9,900 for basic system and
$15,475 per month for additional equipment.
Commonwealth Edison Company of Chicago
Serial Unit Monthly Rental
No. Description Qty Rate (Primary Shift
702 Central Processing 1 $9,900 $9,900
Unit
712 Card Reader 2 770 1,540
756 Card Reader Control 2 300 600
Unit
717 Printer 2 1,200 2,400
757 Printer Control Unit 2 600 1,200
722 Card Punch 2 750 1,500
758 Card Punch Control 2 325 650
Unit
727 Magnetic Tape Units 17 550 9,350
752 Tape Control Unit 1 550 550
776 Record Storage Unit 2 1,850 3,700
732 Magnetic Drum 1 2,800 2,800
Total $ 34,190
2nd and 3rd shift rental charged at 50% of above rates.
General Electric Company Hanford Atomic Products Rental rate is
$34,900/month for system, including average extra shift rental. Rental rate
for
punched card machines, including extra shift but excluding key punches and
verifiers is $2,175 per month.
PERSONNEL REQUIREMENTS
Manufacturer
One 8-Hour Two 8-Hour Three 8-Hour
Shift Shifts Shifts
Engineers 4 7 10
One console operator and 2 floor operators per shift are required.
Programmers vary from 4 to over 30, depending on number of applications on
system.
Education training, program testing, technical assistance on all phases is
available from the manufacturer.
U. S. Navy Aviation Supply Office
One 8-Hour Two 8-Hour Three 8-Hour
Shift Shifts Shifts
Engineers 3 6 9
Operators 9 12 15
The operators are divided as follows: For first shift, 3 are on main frame,
3 auxiliary and 3 supervisory. For second shift, 3 main frame operators are
required and for the third shift three operators are required for the main
frame.
Bank of America
One 8-Hour Second 8-Hour Third 8-Hour
Shift Shift Shift
Supervisors 1
Librarians 1
Operators 1 1 1
Engineers 1 1
In-Output Opera 1 1
Engineers are provided by IBM. Mail clerks, key punch operators and
typists are not included among the typical personnel, since these positions
are not intrinsic to the computer operation as such. Personnel covers
operation on a 5-day-a-week basis.
Operation tends toward open shop.
Currently no training is in progress. Present key personnel have, however,
attended IBM and Bank sponsored courses prior to their initial assignments.
Commonwealth Edison Company of Chicago Three 8-hour shifts require 9
engineers and 18 technician-operators.
BRL 1961, IBM 702, start page 0403
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General Electric Company Hanford Atomic Products
Three 8-hour shifts require 5 engineers and 8 tech-
nician-operators. The engineers are employed by IBM.
Personnel covers operation on a 7-day-a-week basis.
RELIABILITY, OPERATING EXPERIENCE,
AND TIME AVAILABILITY
U. S. Navy Aviation Supply Office
Approximate reliability is 0.85, where reliability
is obtained by subtracting the sum of machine error
time, the unscheduled maintenance time and the tape
trouble time, from the available time and dividing
the difference by the available time. The above
figure is based on the period from July to September
1956.
Bank of America
Average error-free running period 2 Hours
Good time 12.56 Hours/Day
Attempted to run time 14.13 Hours/Day
Operating ratio (Good/Attempted to run time) 0.89
Above figures based on period 1 Jul 56 to 30 Sep 56
Passed Customer Acceptance Test 20 Aug 55
Of the 0.11 lost in the operating ratio above,
approximately 0.037 was due to main frame down time,
0.037 was due to tape unit down time, 0.030 to correc-
tive restart time and 0.006 was due to tape remake
time.
Bank of America
Average error-free running period 100 Hours
Good time 101 Hours/Week (Average)
Attempted to run time 102 Hours/Week (Average)
Operating ratio (Good/Attempted to run time) 0.99
Above figures based on period 1 Jun 60 to 31 Aug 60
Passed Customer Acceptance Test 20 Aug 55
Time is not available for rent to outside organiza-
tions.
A high degree of experience in both the operating
and maintenance personnel has resulted in the virtual
elimination of "down" time.
Chrysler Corporation Service Parts Warehouse
Productive time, maximum 0.94
Productive time, minimum 0.78
Based on period 5 Apr 56 to 27 Sep 56
Passed Customer Acceptance Test 22 Aug 55
Commonwealth Edison Company of Chicago
Average error-free running period 4-6 hours estimate
Good time 18 Hours
Attempted to run time 20 Hours
Operating ratio (Good/Attempted to run time) 0.90
Above figures based on period 1 Oct 56 to 31 Dee 56
Passed Customer Acceptance Test Jul 55
General Electric Company Hanford Atomic Products
Average error-free running period 68 Hours
Good time 1,275 Hours
Attempted to run time 1,301 Hours
Operating ratio (Good/Attempted to run time) 0.98
Above figures based on period 1 Aug 56 to 14 Oct 56
Passed Customer Acceptance Test 1 Jul 55
Core storage unit installed July 1956. Preventive
maintenance is scheduled 4 hours/day for 4 days per
week. Over the weekend 68 hours elapse between sched-
uled maintenance sessions.
The Prudential Insurance Company of America
It is expected that conversion from electrostatic
storage to core storage will further reduce unsched-
uled maintenance from an overall average of 5.8%
experienced between 14 November 1955 and 31 August
1956. Two-shift operation occurred during that period.
ADDITIONAL FEATURES AND REMARKS
Manufacturer
Inter-tape-card-printer conversion.
Rental rates include servicing, educational assist-
ance through a 702 school, special representatives
and programming service.
System was replaced by the Type 705.
Autocoder system is used.
Component units, which have various functions, are
housed in a half-dozen or more separate cabinets, the
number of each type depending upon the user's needs.
The use of these separable units allows freedom in
the design of the data processing system. Essential
components include the arithmetical and logical unit,
the operator's control console, magnetic tape units,
an input card reader, and an output printer and card
punch. Often a magnetic drum will also be included
in an installation, or several drums might be used.
Bank of America
Outstanding features are the inter-tape card-print-
er conversion and the expandable memory.
Magnetic tapes receive an internal label under pro-
gram control as well as a manually produced external
label. Tapes are stored in a fire-proof tape vault
which has humidity and temperature control. Critical
"back-up" tapes are sent daily to off-premise storage
locations.
FUTURE PLANS
Bank of America
Our systems will be replaced by IBM Type 7070 and
1401 Electronic Data Processing machines during the
first part of 1961. All applications on the IBM 702
are currently being programmed for these new comput-
ing systems. Research is also being done on other
applications within the banking field.
Commonwealth Edison Company of Chicago
System was replaced by an IBM Type 705 Electronic
Data Processing Machine in March 1957
INSTALLATIONS
U. S. Navy Aviation Supply Office
Philadelphia 11, Pennsylvania
Bank of America
500 Howard Street
San Francisco, California
Chrysler Corporation
Detroit 31, Michigan
Commonwealth Edison Company
72 West Adams Street
Chicago 90, Illinois
Ford Motor Company
Dearborn, Michigan
General Electric Company
Hanford Atomic Products Operation
Richland, Washington
Monsanto Chemical Company
St. Louis, Missouri
Prudential Life Insurance Company of America
Newark, New Jersey
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