JPS5612154A - Answer signal transmission system - Google Patents

Answer signal transmission system

Info

Publication number
JPS5612154A
JPS5612154A JP8765679A JP8765679A JPS5612154A JP S5612154 A JPS5612154 A JP S5612154A JP 8765679 A JP8765679 A JP 8765679A JP 8765679 A JP8765679 A JP 8765679A JP S5612154 A JPS5612154 A JP S5612154A
Authority
JP
Japan
Prior art keywords
signal
level
answer signal
teu1
cpum
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.)
Granted
Application number
JP8765679A
Other languages
Japanese (ja)
Other versions
JPS6259943B2 (en
Inventor
Masateru Kuroda
Kiyoshi Shikayama
Hiroshi Kitazono
Senji Okumura
Junzo Kikuchi
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.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works Ltd
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 Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Priority to JP8765679A priority Critical patent/JPS5612154A/en
Publication of JPS5612154A publication Critical patent/JPS5612154A/en
Publication of JPS6259943B2 publication Critical patent/JPS6259943B2/ja
Granted 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
    • G06F13/22—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To protect the operation of the system, using processors, from a fault, etc., by setting the transmission state of an answer signal by inverting a control- signal sending switching element in response to a command signal. CONSTITUTION:From processor CPUm of main control unit MCU, polling signals CSL1-CSLn are supplied successively at level ''H'' and answer signal DRB from terminal units TEU1-TEUn are sent back at level ''L''. For example, once signal CSL1 is supplied to TEU1, switching element Q turns on and a signal of +5V is sent out. After processors CPUt and CPUm perform transmission and reception of information, element Q is inverted and an answer signal of level ''L'' is sent out. Then, when one of TEU1-TEUn is not packaged, answer signal DRB is sent out at level ''L'' and CPUm proceeds to the next polling operation.
JP8765679A 1979-07-10 1979-07-10 Answer signal transmission system Granted JPS5612154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8765679A JPS5612154A (en) 1979-07-10 1979-07-10 Answer signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8765679A JPS5612154A (en) 1979-07-10 1979-07-10 Answer signal transmission system

Publications (2)

Publication Number Publication Date
JPS5612154A true JPS5612154A (en) 1981-02-06
JPS6259943B2 JPS6259943B2 (en) 1987-12-14

Family

ID=13920994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8765679A Granted JPS5612154A (en) 1979-07-10 1979-07-10 Answer signal transmission system

Country Status (1)

Country Link
JP (1) JPS5612154A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021039048A1 (en) 2019-08-23 2021-03-04 株式会社村田製作所 Jig for chip-like electronic component
KR102554646B1 (en) 2019-08-23 2023-07-12 가부시키가이샤 무라타 세이사쿠쇼 Jig for chip-shaped electronic parts

Also Published As

Publication number Publication date
JPS6259943B2 (en) 1987-12-14

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