GB749836A - Electronic system for computing and otherwise handling information - Google Patents
Electronic system for computing and otherwise handling informationInfo
- Publication number
- GB749836A GB749836A GB8700/53A GB870053A GB749836A GB 749836 A GB749836 A GB 749836A GB 8700/53 A GB8700/53 A GB 8700/53A GB 870053 A GB870053 A GB 870053A GB 749836 A GB749836 A GB 749836A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuits
- pulse
- information
- control
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/76—Architectures of general purpose stored program computers
- G06F15/78—Architectures of general purpose stored program computers comprising a single central processing unit
Abstract
749,836. Digital electric calculating-apparatus; electric digital-data-storage apparatus. REMINGTON. RAND, Inc. March 30, 1953 [March 31, 1952], No. 8700/53. Class 106 (1). In an electronic system for storing, transferring and processing information in accordance with predetermined instructions, the information and instructions having alphabetical, numerical and symbolical significance and being represented by electric impulse groups according to a combination code, comprising conversion means, analyzing and distinguishing means, manipulation and utilization circuits including computing apparatus for the performance of mathematical processes, control circuits, and interconnection means, the conversion means converts impulses within a group which arrive at the input of the system in parallel into impulses in serial disposition in time and/or converts impulses within a group which arrive at the output from the system in serial disposition into impulses in parallel, the analyzing and distinguishing means receive impulse groups, distinguish between groups which are representative of numerical information and other groups, and keep the other groups from being utilized in mathematical processes, the manipulation circuits store, transfer and otherwise handle information in processes other than mathematical, the utilization circuits use information in mathematical processes, the control circuits control the operation of the utilization and manipulation circuits in accordance with the instructions, and the interconnection means include common transmission circuits to which the inputs and the outputs of the conversion means, the analyzing and distinguishing means and the manipulation and utilization circuits are selectively connected in accordance with instructions for the transmission of information thereamong. General arrangement.-The computing system described comprises a main element COM, Fig. 1, connected to the control unit SC and to, e.g. ten, magnetic-tape " transducers " TT which provide input and output as well as an auxiliary memory, for the element COM. Input information is entered on the magnetic tapes by one or more keyboard-operated " typers T and output information is read from the tapes, decoded and printed by one or more printers P. The computing element COM is similar to the computor described in Specification 736,144 but handles information (both alphabetic and numerical) in a combination code as described below. It comprises a main mercury tank memory MM, Fig. 2, and mercury-delay-line registers including the following which each store a single word:-registers CC (control counter) and CR (control register) which have similar functions to the corresponding registers described in Specification 736,144; an "X" register for storing a multiplier or quotient, an " L " register for storing a multiplicand or divisor; an "F" register for storing three times a multiplicand and an "A" register which with an " algebraic adder AA forms an accumulator. Additional " V " and " Y " registers store two and ten words respectively, and input and output registers I and O each store 60 words. One-word synchronizing registers SYI1, SYI2 and SYO1, SYO2 (not shown in Fig. 2) also are provided in the input and output circuits. As in the computor of Specification 736,144, information is transferred via a "high speed bus amplifier" HSBA, instructions are set up on a "static register " or staticiser SR having an address section associated with MM and a function section associated with re-coding gate-controlling matrices or function tables FT and timing control pulses are supplied from a pulse generator and a cycling unit CU; a normal cycle of operations comprises steps α, #, y, # controlled by a " cycle counter " CY, and extended operations such as multiplication and division are controlled by a " programme counter " PC. The element COM comprises also a sign and magnitude comparator CP, a multiplier-quotient counter MQC and checking circuits such as OFC associated with HSBA. Some of the registers and other devices are duplicated and mutually checked. The unit SC includes a data-entering keyboard, control switches, neon indicators and a printer. Detailed circuits of most of the system are given. These electronic circuits include trigger pairs of hard valves having-one and two stable states, called " delay flops " (DF) and " flipflops " (FF) respectively, germanium diode coincidence gates (G), " or " gates or buffers (B), pulse shaping circuits (PFR) described below, and anti-coincidence circuits or " quarter adders " (Q). Trigger pairs having symmetrical inputs and used as binary counters (BC) and delay flops employing thyratrons, called " thyraflops " (TF), are also employed. Word code.-A word length or minor cycle comprises 91 pulse times P0-P90, Fig. 159, divided into 13 sections of which 12 may each store a character (decimal digit, letter, &c.) according to a 7-digit binary combination code, the 13th section being blank to provide a space between words (SBW). The word may comprise, e.g., an 11-digit decimal number with sign, or two 6-character instructions, Fig. 154, in which 3 characters define a location in the main memory, 2 characters define the type of instruction, and 1 character is always zero (unused). In the code, the 7 digits are divided into a 4-digit " excess-three " portion XS3, Fig. 167, a 2-digit zone, and a check digit. Decimal digits are represented by the excessthree code, e.g. " 1 " is represented by the binary number 4=0010 (the least significant digit being on the left) the zone digits being 00, and letters A, B, C, &c. in increasing numerical order of the combined XS3 and zone digits. The check digit is always such as to make the total number of " 1's " odd. Plus and minus signs are represented by 1100 00 1 (zero) and 0100 00 0 respectively. Timing pulse generator.-Timing or clock pulses of 0.08 Ás at a frequency of 2.25 mc/s. are generated by an arrangement similar to that described in Specification 736,144 including a crystal-controlled oscillator whose sinusoidal output is supplied through a ringing circuit to a clipper, the stabilized output of which comprises a series of sharp positive master timing pulses. The latter are supplied to local " clock gate driving " circuits each of which includes a transformer having two output windings which supply positive and negative timing pulses (TP+ and TP - ) respectively. Pulse-shaping circuits ; timing pulse or " clock " gates.-The timing pulses TP+ and TP - are applied to " clock " gate circuits PFR such as that shown in Fig. 19, so as to re-shape a series-mode non-return-to-zero signal (positive for " 0," negative for " 1 ") applied to the control grid of a normally conducting valve V1 (conduction being indicated by shading). When a negative " 1 "-representing signal pulse cuts off the valve, the raised anode potential allows the next TP+ pulse to be gated via point A to the control grid of valve V2 of trigger circuit PF so that the latter is switched over to the " 1 "-representing condition at the midpoint of the input pulse. PF remains in this condition until the input signal to V1 returns to positive when the correct anode potential allows the next TP-pulse to be gated via point B and to restore the PF to the condition shown. Non- return-to-zero outputs are obtained from the tappings indicated in the anode circuits of the trigger valves V2, V3. Cycling unit.-This comprises two pairs of delay line loops in each of which a single pulse is circulated; the loops in each pair have delays of 7 and 13 pulse lengths respectively, and outputs obtained from selected tappings of these loops are combined in coincidence gates to produce selected pulses t0-t90 defining the pulse positions in a minor cycle, Fig. 159 (" t " denoting absolute time). The t-pulses are produced independently from each pair of loops and checked against one another and against the output from the end of an auxiliary 27- pulse-length delay line from which further tappings are taken, any error in the selective timing being registered on a trigger circuit which stops further operations of the computer. Main memory.-This comprises 7 mercury tanks each containing 18 ten-word channels. Only 100 of these channels are used to form the main information memory; 6 channels are used for each of the registers I and O, Fig. 2, 1 for the Y-register, 1 in each tank for temperature control, and 6 channels are spare. Each information circulation circuit comprises, from the mercury channel ML, Fig. 52, an intermediate frequency amplifier IFAD and further amplifier A, with automatic gain control AGC, a delay network DC, gate CG, pulse-shaping circuit PFR and mercury delay line driver MLD. When information is to be read out or entered in a channel, signals from SR, Fig. 2, applied to control gate GT, cause the opening of output and input gates G0, G1, connected by lines HSB1M, HSB2M to the amplifier HSBA; for entry of information, also a signal TSR applied through gate G<SP>1</SP>R inhibits recirculation gate CG. For highly sensitive automatic temperature control, the current through a heating coil is determined by the degree of coincidence between a timing pulse delayed in the temperature control channel and a further pulse applied directly to a coincidence gate. A standby control system also is provided including a bellows-controlled microswitch. Amplifier HSBA.-As shown diagrammatic-. ally in Fig. 64, information from duplicate registers A, X, F, L and #A, #X, #F, #L or from duplicate output gates of registers CC, CR, V,Y, SYI1, SYI2, supplied to duplicate buees HSB1A, #HSB1A, is sent to register input gates via output buses HSB2A, #HSB2A respectively; also either of the buses HSB1A, #HSB1A is connected to the memory MM through a switch SWI and bus HSB2M, and either of HSB2A, #HSB2A may be connected to register SY02 through switch SW2. Informati
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00279710A US3784983A (en) | 1952-03-31 | 1952-03-31 | Information handling system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB749836A true GB749836A (en) | 1956-06-06 |
Family
ID=23070098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8700/53A Expired GB749836A (en) | 1952-03-31 | 1953-03-30 | Electronic system for computing and otherwise handling information |
Country Status (5)
Country | Link |
---|---|
US (1) | US3784983A (en) |
CH (1) | CH331573A (en) |
DE (1) | DE1193707B (en) |
FR (1) | FR1084147A (en) |
GB (1) | GB749836A (en) |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2936118A (en) * | 1954-09-27 | 1960-05-10 | Marchant Res Inc | Electronic digital computers |
US2937810A (en) * | 1957-06-28 | 1960-05-24 | Bell Telephone Labor Inc | Digital computer circuit |
US2942780A (en) * | 1954-07-01 | 1960-06-28 | Ibm | Multiplier-divider employing transistors |
US2950465A (en) * | 1954-03-22 | 1960-08-23 | Ibm | Electronic data processing machine |
US2957626A (en) * | 1955-11-21 | 1960-10-25 | Ibm | High-speed electronic calculator |
US2974866A (en) * | 1954-03-30 | 1961-03-14 | Ibm | Electronic data processing machine |
US2979260A (en) * | 1956-09-21 | 1961-04-11 | Ibm | Data transfer system |
US3012722A (en) * | 1956-08-31 | 1961-12-12 | Minneanolis Honeywell Regulato | Checking circutiry for data processing apparatus |
US3019976A (en) * | 1957-12-26 | 1962-02-06 | Ibm | Data processing system including an indicating register |
US3022006A (en) * | 1959-01-26 | 1962-02-20 | Burroughs Corp | Floating-point computer |
US3029412A (en) * | 1956-09-20 | 1962-04-10 | Ibm | Data input-output control mechanism |
US3037193A (en) * | 1958-02-28 | 1962-05-29 | Honeywell Regulator Co | Electrical apparatus for processing digital data |
US3037700A (en) * | 1956-11-29 | 1962-06-05 | Ibm | Indexing registers for calculators |
US3050717A (en) * | 1955-03-04 | 1962-08-21 | Burroughs Corp | Computer shift control circuits |
US3055585A (en) * | 1955-08-11 | 1962-09-25 | Toledo Scale Corp | Industrial computing scale |
US3062438A (en) * | 1958-12-30 | 1962-11-06 | Ibm | Data storage and transfer apparatus |
US3074636A (en) * | 1958-12-31 | 1963-01-22 | Texas Instruments Inc | Digital computer with simultaneous internal data transfer |
US3083910A (en) * | 1955-08-01 | 1963-04-02 | Ibm | Serial adder and subtracter |
US3105143A (en) * | 1959-06-30 | 1963-09-24 | Research Corp | Selective comparison apparatus for a digital computer |
US3140464A (en) * | 1961-05-31 | 1964-07-07 | Rca Corp | Central parity checker operating from and into a data transfer bus |
US3141965A (en) * | 1958-09-05 | 1964-07-21 | Coste Louis Etienne | Serial adder using algebraic quinary notation |
US3157867A (en) * | 1958-07-18 | 1964-11-17 | Ncr Co | Tape handling apparatus |
US3166668A (en) * | 1960-03-24 | 1965-01-19 | Ibm | Computer program system |
US3170142A (en) * | 1956-09-26 | 1965-02-16 | Ibm | Data processing machine |
US3201762A (en) * | 1957-01-25 | 1965-08-17 | Honeywell Inc | Electrical data processing apparatus |
US3222650A (en) * | 1960-12-30 | 1965-12-07 | Ibm | Interpretation machine |
US3231867A (en) * | 1962-03-02 | 1966-01-25 | Gen Dynamics Corp | Dynamic data storage circuit |
US3245039A (en) * | 1954-03-22 | 1966-04-05 | Ibm | Electronic data processing machine |
US3246299A (en) * | 1958-08-29 | 1966-04-12 | Ibm | Data processing system |
US3252149A (en) * | 1963-03-28 | 1966-05-17 | Digitronics Corp | Data processing system |
US3277448A (en) * | 1961-12-06 | 1966-10-04 | Scm Corp | Data processing mechanisms |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3015442A (en) * | 1954-12-24 | 1962-01-02 | Ibm | Electronic multipliers |
US3118055A (en) * | 1954-12-28 | 1964-01-14 | Rca Corp | Electronic digital information handling system with character recognition for controlling information flow |
NL136145C (en) * | 1955-01-24 | |||
US3053449A (en) * | 1955-03-04 | 1962-09-11 | Burroughs Corp | Electronic computer system |
US2982472A (en) * | 1955-05-02 | 1961-05-02 | Harry D Huskey | Binary digital computer with magnetic drum storage |
US3274376A (en) * | 1955-05-18 | 1966-09-20 | Bendix Corp | Digital differential analyzer in conjunction with a general purpose computer |
US3313925A (en) * | 1956-05-11 | 1967-04-11 | Gen Precision Inc | Digital differential analyzer |
IT1014277B (en) * | 1974-06-03 | 1977-04-20 | Cselt Centro Studi Lab Telecom | CONTROL SYSTEM OF PROCESS COMPUTERS OPERATING IN PARALLEL |
US6158857A (en) * | 1999-04-29 | 2000-12-12 | Hewlett-Packard Company | Internal drum communication using a capacitor |
EP3381769B1 (en) * | 2015-11-25 | 2019-10-16 | Coordem Transport Tech. Co., Ltd. | Method and system for controlling grade of automation of train operation |
Family Cites Families (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735005A (en) * | 1956-02-14 | Add-subtract counter | ||
FR964113A (en) * | 1950-08-07 | |||
US2313238A (en) * | 1933-04-13 | 1943-03-09 | Western Union Telegraph Co | Multichannel telegraph system |
BE437366A (en) * | 1938-10-21 | |||
FR980753A (en) * | 1943-02-22 | 1951-05-17 | Cie Ind Des Machines Automatiq | Automatic switching system for out-of-order statistical machines |
US2418928A (en) * | 1944-11-04 | 1947-04-15 | Teletype Corp | Telegraph system and apparatus for selective single or double channel operation |
BE468385A (en) * | 1945-09-27 | |||
US2625328A (en) * | 1946-12-17 | 1953-01-13 | Bell Telephone Labor Inc | Automatic code translating system |
US2671611A (en) * | 1946-12-17 | 1954-03-09 | Bell Telephone Labor Inc | Control circuit for calculating machines |
USRE23686E (en) * | 1947-02-12 | 1953-07-14 | Communication system | |
NL139156B (en) * | 1947-03-25 | Montedison Spa | PROCEDURE TO PREPARE CYCLODODECATRIES-1,5,9 AND DERIVATIVES. | |
US2617704A (en) * | 1947-07-15 | 1952-11-11 | Bell Telephone Labor Inc | Recording system |
US2528101A (en) * | 1947-07-29 | 1950-10-31 | Bell Telephone Labor Inc | Telephone system |
US2538636A (en) * | 1947-12-31 | 1951-01-16 | Bell Telephone Labor Inc | Digital computer |
US2622148A (en) * | 1948-03-15 | 1952-12-16 | Nederlanden Staat | Error detector for telegraph printer codes |
US2726038A (en) * | 1948-05-18 | 1955-12-06 | William K Ergen | Electronic digital computers |
US2611813A (en) * | 1948-05-26 | 1952-09-23 | Technitrol Engineering Company | Magnetic data storage system |
US2750532A (en) * | 1948-06-03 | 1956-06-12 | Ibm | Cathode-ray devices, particularly for electronic computers |
US2609143A (en) * | 1948-06-24 | 1952-09-02 | George R Stibitz | Electronic computer for addition and subtraction |
US2737342A (en) * | 1948-08-04 | 1956-03-06 | Teleregister Corp | Rotary magnetic data storage system |
NL148455B (en) * | 1948-09-03 | Tech Electr Jarret T E J | ELECTRIC MACHINE WITH VARIABLE RELUCTANCE. | |
FR975941A (en) * | 1948-09-22 | 1951-03-12 | Electronique & Automatisme Sa | Pulse counters |
NL84065C (en) * | 1948-10-13 | |||
US2570716A (en) * | 1948-11-27 | 1951-10-09 | Sylvania Electric Prod | Signal transmission network |
US2558447A (en) * | 1948-12-30 | 1951-06-26 | Rca Corp | High-speed frequency divider |
US2659072A (en) * | 1949-01-13 | 1953-11-10 | John F Coales | Data transmission system for digital calculating machines or the like |
US2604262A (en) * | 1949-01-19 | 1952-07-22 | Ibm | Multiplying and dividing means |
US2701095A (en) * | 1949-02-12 | 1955-02-01 | George R Stibitz | Electronic computer for division |
NL151959B (en) * | 1949-03-01 | Nickel Le | PROCESS FOR PREPARING PURE NICKEL SULPHATE HYDRATE. | |
NL152498B (en) * | 1949-03-24 | Badya Builders | CHAIN STOPPER. | |
NL152497B (en) * | 1949-03-24 | 1900-01-01 | Oldenzaal B V Maschf | SHIP DOOR OR HATCH. |
USRE24447E (en) * | 1949-04-27 | 1958-03-25 | Diagnostic information monitoring | |
US2652196A (en) * | 1949-05-20 | 1953-09-15 | Remington Rand Inc | Wire recording storage mechanism for bookkeeping machines |
US2810516A (en) * | 1949-06-03 | 1957-10-22 | Nat Res Dev | Electronic digital computing devices |
NL154335B (en) * | 1949-06-22 | Hell Rudolf Dr Ing Gmbh | SYSTEM FOR TIGHTENING AND TIGHTENING PHOTOGRAPHIC FILM MATERIAL ON AND FROM A DRUM. | |
BE497585A (en) * | 1949-08-17 | |||
US2658670A (en) * | 1949-08-31 | 1953-11-10 | Rca Corp | Rate determining device |
BE498160A (en) * | 1949-09-17 | |||
US2589465A (en) * | 1949-10-22 | 1952-03-18 | Eckert Mauchly Comp Corp | Monitoring system |
US2657856A (en) * | 1949-11-15 | 1953-11-03 | Gen Electric | Number converter |
NL157685B (en) * | 1949-12-02 | North American Rockwell | ASSEMBLY FOR PERFORMING WORK ON AN UNDERWATER WELL. | |
GB717114A (en) * | 1950-01-04 | 1954-10-20 | Nat Res Dev | Improvements in or relating to digital computers |
NL79872C (en) * | 1950-01-11 | |||
US2641696A (en) * | 1950-01-18 | 1953-06-09 | Gen Electric | Binary numbers comparator |
US2749037A (en) * | 1950-04-21 | 1956-06-05 | George R Stibitz | Electronic computer for multiplication |
GB742470A (en) * | 1950-08-18 | 1955-12-30 | Nat Res Dev | Improvements in or relating to electronic digital computing machines |
BE505508A (en) * | 1950-08-30 | |||
US2639859A (en) * | 1950-11-29 | 1953-05-26 | Rca Corp | Transitory memory circuits |
US2682574A (en) * | 1952-03-29 | 1954-06-29 | Rca Corp | Electronic diplex transmitting distributor |
-
0
- FR FR1084147D patent/FR1084147A/fr not_active Expired
-
1952
- 1952-03-31 US US00279710A patent/US3784983A/en not_active Expired - Lifetime
-
1953
- 1953-03-30 GB GB8700/53A patent/GB749836A/en not_active Expired
- 1953-03-31 CH CH331573D patent/CH331573A/en unknown
- 1953-03-31 DE DER11328A patent/DE1193707B/en active Pending
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3245039A (en) * | 1954-03-22 | 1966-04-05 | Ibm | Electronic data processing machine |
US2950465A (en) * | 1954-03-22 | 1960-08-23 | Ibm | Electronic data processing machine |
US2974866A (en) * | 1954-03-30 | 1961-03-14 | Ibm | Electronic data processing machine |
US2942780A (en) * | 1954-07-01 | 1960-06-28 | Ibm | Multiplier-divider employing transistors |
US2936118A (en) * | 1954-09-27 | 1960-05-10 | Marchant Res Inc | Electronic digital computers |
US3050717A (en) * | 1955-03-04 | 1962-08-21 | Burroughs Corp | Computer shift control circuits |
US3083910A (en) * | 1955-08-01 | 1963-04-02 | Ibm | Serial adder and subtracter |
US3055585A (en) * | 1955-08-11 | 1962-09-25 | Toledo Scale Corp | Industrial computing scale |
US2957626A (en) * | 1955-11-21 | 1960-10-25 | Ibm | High-speed electronic calculator |
US3012722A (en) * | 1956-08-31 | 1961-12-12 | Minneanolis Honeywell Regulato | Checking circutiry for data processing apparatus |
US3029412A (en) * | 1956-09-20 | 1962-04-10 | Ibm | Data input-output control mechanism |
US2979260A (en) * | 1956-09-21 | 1961-04-11 | Ibm | Data transfer system |
US3170142A (en) * | 1956-09-26 | 1965-02-16 | Ibm | Data processing machine |
US3037700A (en) * | 1956-11-29 | 1962-06-05 | Ibm | Indexing registers for calculators |
US3201762A (en) * | 1957-01-25 | 1965-08-17 | Honeywell Inc | Electrical data processing apparatus |
US2937810A (en) * | 1957-06-28 | 1960-05-24 | Bell Telephone Labor Inc | Digital computer circuit |
US3019976A (en) * | 1957-12-26 | 1962-02-06 | Ibm | Data processing system including an indicating register |
US3037193A (en) * | 1958-02-28 | 1962-05-29 | Honeywell Regulator Co | Electrical apparatus for processing digital data |
US3157867A (en) * | 1958-07-18 | 1964-11-17 | Ncr Co | Tape handling apparatus |
US3246299A (en) * | 1958-08-29 | 1966-04-12 | Ibm | Data processing system |
US3141965A (en) * | 1958-09-05 | 1964-07-21 | Coste Louis Etienne | Serial adder using algebraic quinary notation |
US3062438A (en) * | 1958-12-30 | 1962-11-06 | Ibm | Data storage and transfer apparatus |
US3074636A (en) * | 1958-12-31 | 1963-01-22 | Texas Instruments Inc | Digital computer with simultaneous internal data transfer |
US3022006A (en) * | 1959-01-26 | 1962-02-20 | Burroughs Corp | Floating-point computer |
US3105143A (en) * | 1959-06-30 | 1963-09-24 | Research Corp | Selective comparison apparatus for a digital computer |
US3166668A (en) * | 1960-03-24 | 1965-01-19 | Ibm | Computer program system |
US3222650A (en) * | 1960-12-30 | 1965-12-07 | Ibm | Interpretation machine |
US3140464A (en) * | 1961-05-31 | 1964-07-07 | Rca Corp | Central parity checker operating from and into a data transfer bus |
US3277448A (en) * | 1961-12-06 | 1966-10-04 | Scm Corp | Data processing mechanisms |
US3231867A (en) * | 1962-03-02 | 1966-01-25 | Gen Dynamics Corp | Dynamic data storage circuit |
US3252149A (en) * | 1963-03-28 | 1966-05-17 | Digitronics Corp | Data processing system |
Also Published As
Publication number | Publication date |
---|---|
CH331573A (en) | 1958-07-31 |
US3784983A (en) | 1974-01-08 |
FR1084147A (en) | 1955-01-17 |
DE1193707B (en) | 1965-05-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB749836A (en) | Electronic system for computing and otherwise handling information | |
US3591787A (en) | Division system and method | |
US4110832A (en) | Carry save adder | |
GB890323A (en) | Improvements in or relating to electronic data processing apparatus | |
GB1031235A (en) | Calculator apparatus | |
US3098994A (en) | Self checking digital computer system | |
GB835243A (en) | Electronic computer system | |
US3553445A (en) | Multicipher entry | |
US3391391A (en) | Computation with variable fractional point readout | |
GB1078175A (en) | High speed divider for a digital computer | |
US3641329A (en) | Improvements in electronic computer keyboard control | |
US3456098A (en) | Serial binary multiplier arrangement | |
GB1098853A (en) | Computing machine | |
US3644724A (en) | Coded decimal multiplication by successive additions | |
GB1438391A (en) | Control device for tabulation printing | |
US3229078A (en) | Code converter | |
US2940669A (en) | Radix converter | |
GB1006874A (en) | Electronic computers | |
US3749899A (en) | Binary/bcd arithmetic logic unit | |
GB1006868A (en) | Data processing machine | |
US2626752A (en) | Carry device for electronic calculators | |
US3509331A (en) | Serial-by-digit recirculating accumulating register | |
US3643077A (en) | Electronic printing digital calculator | |
US3531632A (en) | Arithmetic system utilizing recirculating delay lines with data stored in polish stack form | |
US3657529A (en) | Entry mark system for entry and display of numbers |