JPS56124935A - Data write control unit to memory device - Google Patents

Data write control unit to memory device

Info

Publication number
JPS56124935A
JPS56124935A JP997981A JP997981A JPS56124935A JP S56124935 A JPS56124935 A JP S56124935A JP 997981 A JP997981 A JP 997981A JP 997981 A JP997981 A JP 997981A JP S56124935 A JPS56124935 A JP S56124935A
Authority
JP
Japan
Prior art keywords
memory device
write
data
control unit
photocoupler
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.)
Pending
Application number
JP997981A
Other languages
Japanese (ja)
Inventor
Minoru Oota
Shigeru Taikobo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seikosha KK
Original Assignee
Seikosha KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seikosha KK filed Critical Seikosha KK
Priority to JP997981A priority Critical patent/JPS56124935A/en
Publication of JPS56124935A publication Critical patent/JPS56124935A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0227—Cooperation and interconnection of the input arrangement with other functional units of a computer

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Information Transfer Systems (AREA)

Abstract

PURPOSE:To prevent mixing an external noise, and also make it possible to immediately correct the write of an erroneous data, by providing a photocoupler between the input device and the memory device, and also designating an address to the memory device by use of the reversible counter. CONSTITUTION:Photocouplers P1-Pn are provided between the encoders E1-En connected to plural keys K1-Kn being an input device, and the gate circuits G1- G4n which constitute a passing control circuit for controlling the write of a data to the memory device R. Also, the one shot pulse generator M1 is connected through the photocoupler PS to the key KS which is used when a data is input over again, so that correction of the address which has been inputted by mistake can be instructed to the memory device R, by the reversible counter C. And, the device is constituted so that the electric power source of a separate system can be used for the input device containing the encoders E1-En and the memory device R, by which mixing of an external noise is reduced and also write of an erroneous data can be corrected immediately.
JP997981A 1981-01-26 1981-01-26 Data write control unit to memory device Pending JPS56124935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP997981A JPS56124935A (en) 1981-01-26 1981-01-26 Data write control unit to memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP997981A JPS56124935A (en) 1981-01-26 1981-01-26 Data write control unit to memory device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP12560676A Division JPS5350927A (en) 1976-10-20 1976-10-20 Controller for writing data in memory

Publications (1)

Publication Number Publication Date
JPS56124935A true JPS56124935A (en) 1981-09-30

Family

ID=11735016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP997981A Pending JPS56124935A (en) 1981-01-26 1981-01-26 Data write control unit to memory device

Country Status (1)

Country Link
JP (1) JPS56124935A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933724B1 (en) * 1967-02-08 1974-09-09
JPS5072536A (en) * 1973-10-29 1975-06-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933724B1 (en) * 1967-02-08 1974-09-09
JPS5072536A (en) * 1973-10-29 1975-06-16

Similar Documents

Publication Publication Date Title
GB9319661D0 (en) Integrated circuit
JPS57117027A (en) Signal sending and receiving circuit
ES481636A1 (en) Programmable control latch mechanism for a data processing system.
JPS56124935A (en) Data write control unit to memory device
JPS57135500A (en) Data memory protecting circuit
JPS55157022A (en) Output circuit for microcomputer
JPS5694597A (en) Memory data control system
JPS5694596A (en) Memory control system
JPS53114325A (en) Control system of data processor
JPS56111905A (en) Programmable sequence controller
JPS542020A (en) Key control system
JPS6435633A (en) Interruption control system
JPS57197653A (en) Control device of microprogram
JPS5760444A (en) Microprogram control system
JPS57174737A (en) Display device
JPS57135496A (en) P-rom compensating circuit
JPS5419615A (en) Control system for input and output unit
JPS5470046A (en) Computer control system for copier
JPS5779516A (en) Heating device
JPS56101229A (en) Computer system
JPS5663613A (en) Operation check circuit of magnetic flux control unit
JPS5717062A (en) Parity checking system
JPS5647827A (en) Output signal controlling circuit of microcomputer system
JPS56162126A (en) Input/output control device
JPS5578322A (en) Input/output circuit of microcomputer