JPS54506A - Transfer system of key information in b board - Google Patents

Transfer system of key information in b board

Info

Publication number
JPS54506A
JPS54506A JP6488577A JP6488577A JPS54506A JP S54506 A JPS54506 A JP S54506A JP 6488577 A JP6488577 A JP 6488577A JP 6488577 A JP6488577 A JP 6488577A JP S54506 A JPS54506 A JP S54506A
Authority
JP
Japan
Prior art keywords
board
key information
transfer system
key contacts
eanbling
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
JP6488577A
Other languages
Japanese (ja)
Inventor
Kiyohiko Abe
Tatsumasa Onuma
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6488577A priority Critical patent/JPS54506A/en
Publication of JPS54506A publication Critical patent/JPS54506A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
    • H04M3/62—Keyboard equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To economize the system by eanbling to constitute the system so that the distance between a scanner and a B board can practically be ignored, through the detection of operation of key contacts at a exchanger main body with the constitution of key contacts in the B board in matrix shape.
JP6488577A 1977-06-03 1977-06-03 Transfer system of key information in b board Pending JPS54506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6488577A JPS54506A (en) 1977-06-03 1977-06-03 Transfer system of key information in b board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6488577A JPS54506A (en) 1977-06-03 1977-06-03 Transfer system of key information in b board

Publications (1)

Publication Number Publication Date
JPS54506A true JPS54506A (en) 1979-01-05

Family

ID=13270993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6488577A Pending JPS54506A (en) 1977-06-03 1977-06-03 Transfer system of key information in b board

Country Status (1)

Country Link
JP (1) JPS54506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5452405A (en) * 1977-10-03 1979-04-25 Fujitsu Ltd Subscribersigma selective key circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5452405A (en) * 1977-10-03 1979-04-25 Fujitsu Ltd Subscribersigma selective key circuit
JPS5847900B2 (en) * 1977-10-03 1983-10-25 富士通株式会社 Subscriber selection key circuit

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