JPS57108925A - Switch input circuit - Google Patents

Switch input circuit

Info

Publication number
JPS57108925A
JPS57108925A JP55188812A JP18881280A JPS57108925A JP S57108925 A JPS57108925 A JP S57108925A JP 55188812 A JP55188812 A JP 55188812A JP 18881280 A JP18881280 A JP 18881280A JP S57108925 A JPS57108925 A JP S57108925A
Authority
JP
Japan
Prior art keywords
interruption
input circuit
processor
input
data
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
JP55188812A
Other languages
Japanese (ja)
Inventor
Tadashi Nakajima
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55188812A priority Critical patent/JPS57108925A/en
Publication of JPS57108925A publication Critical patent/JPS57108925A/en
Pending legal-status Critical Current

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
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G06F13/24—Handling requests for interconnection or transfer for access to input/output bus using interrupt

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Programmable Controllers (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE:To enable data reading operation with less unnecessary time, by decreasing the number of data input circuits by providing one data output circuit. CONSTITUTION:When only a switch SD11 is closed, an interruption input circuit 2-1 has a low input, so one of switches SD11-SD13 is closed to input an interruption signal to a processor 4. Then, the processor 4 sends a signal to a gate circuit 6, which outputs a selection signal to a line 6a. The selection signal is inputted to an interruption input circuit 7 through a diode D1, and the interruption input circuit 7 inputs an interruption signal to the processor 4. Thus, the processor 4 reads the data of a data input circuit 3-1 as that of a switch block 1-1.
JP55188812A 1980-12-25 1980-12-25 Switch input circuit Pending JPS57108925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55188812A JPS57108925A (en) 1980-12-25 1980-12-25 Switch input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55188812A JPS57108925A (en) 1980-12-25 1980-12-25 Switch input circuit

Publications (1)

Publication Number Publication Date
JPS57108925A true JPS57108925A (en) 1982-07-07

Family

ID=16230239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55188812A Pending JPS57108925A (en) 1980-12-25 1980-12-25 Switch input circuit

Country Status (1)

Country Link
JP (1) JPS57108925A (en)

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