GB904334A - Improvements in or relating to data handling equipment - Google Patents
Improvements in or relating to data handling equipmentInfo
- Publication number
- GB904334A GB904334A GB394159A GB394159A GB904334A GB 904334 A GB904334 A GB 904334A GB 394159 A GB394159 A GB 394159A GB 394159 A GB394159 A GB 394159A GB 904334 A GB904334 A GB 904334A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transfer
- gate
- highway
- units
- gates
- 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
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
- G06F13/362—Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control
- G06F13/366—Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control using a centralised polling arbiter
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computer And Data Communications (AREA)
- Communication Control (AREA)
Abstract
904,334. Electrical digital data-processing systems. INTERNATIONAL COMPUTERS & TABULATORS Ltd. Jan. 25, 1960 [Feb. 4, 1959], No. 3941/59. Class 106 (1). In a data-processing system comprising a number of individual data handling units, transfer of data from one unit to another is made over a common highway. The availability of the highway and the units for datatransfer is indicated in associated indicators which are scanned cyclically. A control circuit is set jointly by transfer instructions and the availability of the highway and the relevant data-handling units to initiate transfer, scanning being halted during transfer. An arithmetic unit is given priority. The highway comprises eight bit-channels 8 and a timing pulse channel 9 and characters are transferred in succession in 8-bit code. When a unit 1-3, 4a-4d, is idle its associated indicator 12 signals an associated gate in the transfer control circuit 11. An instruction is set up in the computer 1 and sent over line 15 to an instruction register 22, Fig. 2, in the transfer control circuit 11. The source and destination addresses are decoded at 25 and 26 to feed appropriate AND gates 30 and 39 which are also fed by the " idle " indicators 12 over lines 13. The source gates 30 are scanned by commutator 32 which stops when it finds an open gate, so energizing gate 38, the selected AND gate 39 relating to the destination and gate 41. Gate 41 sets flip-flop 14 to busy the highway to other instructions and sets flip-flop 29 for a predetermined time to permit the AND gates 27 and 44 to send the necessary control signals from the instruction register to the units concerned. Gate 41 also signals the computer 1 over line 17b to start the transfer timing generator 10. One each of flip-flops 45, 46 is set up to condition read-out and read-in gates 6 and 7, Fig. 1, in the source and destination units, respectively. Transfer takes place through the buffers 5. A transfer complete signal is then sent over line 17c to the transfer control device 11. If transfer is incorrect in any of a number of ways an appropriate gate 53 is opened and an alarm line 17a energized. In known manner the computer unit is given priority, and a transfer involving the computer unit may take place without awaiting the completion of transfer between two of the other units. In this case the information is set up in the buffer of the source and transfer is delayed until the computer unit releases the common highway.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB394159A GB904334A (en) | 1959-02-04 | 1959-02-04 | Improvements in or relating to data handling equipment |
DEJ17630A DE1159187B (en) | 1959-02-04 | 1960-02-03 | Device for processing information |
FR817422A FR1247158A (en) | 1959-02-04 | 1960-02-03 | Device for the interconnection of several information processing units |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB394159A GB904334A (en) | 1959-02-04 | 1959-02-04 | Improvements in or relating to data handling equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
GB904334A true GB904334A (en) | 1962-08-29 |
Family
ID=9767753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB394159A Expired GB904334A (en) | 1959-02-04 | 1959-02-04 | Improvements in or relating to data handling equipment |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1159187B (en) |
FR (1) | FR1247158A (en) |
GB (1) | GB904334A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2296883A1 (en) * | 1974-12-30 | 1976-07-30 | Ibm | DATA TRANSFER CONTROL SYSTEM |
EP0028891A1 (en) * | 1979-11-05 | 1981-05-20 | Litton Resources Systems, Inc. | A data processing system |
US4400778A (en) | 1979-11-05 | 1983-08-23 | Litton Resources Systems, Inc. | Large-volume, high-speed data processor |
GB2117944A (en) * | 1982-03-17 | 1983-10-19 | Inst Francais Du Petrole | Device controlling data transfers between a data acquisition system and a recording and reading apparatus |
FR2536882A1 (en) * | 1982-11-25 | 1984-06-01 | Centre Nat Rech Scient | INTERFACE FOR MANAGING EXCHANGES OF INFORMATION ON A COMMUNICATION BUS BETWEEN AT LEAST ONE CONTROL UNIT AND PERIPHERAL UNITS OR BETWEEN THESE PERIPHERAL UNITS |
US4491916A (en) * | 1979-11-05 | 1985-01-01 | Litton Resources Systems, Inc. | Large volume, high speed data processor |
EP0220536A2 (en) * | 1985-10-31 | 1987-05-06 | International Business Machines Corporation | Method of arbitrating access to a shared resource among a plurality of uniquely identified processors |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3432813A (en) * | 1966-04-19 | 1969-03-11 | Ibm | Apparatus for control of a plurality of peripheral devices |
FR2462745B1 (en) * | 1979-07-30 | 1986-01-03 | Jeumont Schneider | DEVICE FOR TEMPORAL SHARING OF ACCESS TO A MEMORY CONNECTED TO A SINGLE BUS BETWEEN A CENTRAL COMPUTER AND A PLURALITY OF PERIPHERAL COMPUTERS |
-
1959
- 1959-02-04 GB GB394159A patent/GB904334A/en not_active Expired
-
1960
- 1960-02-03 FR FR817422A patent/FR1247158A/en not_active Expired
- 1960-02-03 DE DEJ17630A patent/DE1159187B/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2296883A1 (en) * | 1974-12-30 | 1976-07-30 | Ibm | DATA TRANSFER CONTROL SYSTEM |
EP0028891A1 (en) * | 1979-11-05 | 1981-05-20 | Litton Resources Systems, Inc. | A data processing system |
US4400778A (en) | 1979-11-05 | 1983-08-23 | Litton Resources Systems, Inc. | Large-volume, high-speed data processor |
US4491916A (en) * | 1979-11-05 | 1985-01-01 | Litton Resources Systems, Inc. | Large volume, high speed data processor |
GB2117944A (en) * | 1982-03-17 | 1983-10-19 | Inst Francais Du Petrole | Device controlling data transfers between a data acquisition system and a recording and reading apparatus |
FR2536882A1 (en) * | 1982-11-25 | 1984-06-01 | Centre Nat Rech Scient | INTERFACE FOR MANAGING EXCHANGES OF INFORMATION ON A COMMUNICATION BUS BETWEEN AT LEAST ONE CONTROL UNIT AND PERIPHERAL UNITS OR BETWEEN THESE PERIPHERAL UNITS |
EP0112208A1 (en) * | 1982-11-25 | 1984-06-27 | CNRS, Centre National de la Recherche Scientifique | Interface for the control of information exchanges on a communication bus between at least a control unit and peripheral units or between peripheral units |
US4542501A (en) * | 1982-11-25 | 1985-09-17 | Centre National De La Recherche Scientifique | Interface for managing information exchanges on a communications bus |
EP0220536A2 (en) * | 1985-10-31 | 1987-05-06 | International Business Machines Corporation | Method of arbitrating access to a shared resource among a plurality of uniquely identified processors |
EP0220536A3 (en) * | 1985-10-31 | 1987-08-05 | International Business Machines Corporation | Method for communicating data between a plurality of processors |
Also Published As
Publication number | Publication date |
---|---|
FR1247158A (en) | 1960-11-25 |
DE1159187B (en) | 1963-12-12 |
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