BRL Report 1961

BRL 1961, IBM 701, start page 0390

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

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

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

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

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 80^oF. 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 120^oF. 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 120^oF. 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

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

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

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 [N_p (N_c + 4) + 1 ] + 115 microseconds. The time required to divide is given by 23 [ 10 + N_d + (N_d - N_r)(7.5K + 15) ] + 115 micro- seconds. Where N_p = number of multiplier digits N_c = number of multiplicand digits N_d = number of dividend digits N_r = number of divisor digits K = N_r if N_r > 8 and K = N_r + 0.005(8 - N_r) if N_r < 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

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

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

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

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

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

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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