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JPS55134434A - Decoding unit - Google Patents

Decoding unit

Info

Publication number
JPS55134434A
JPS55134434A JP4185679A JP4185679A JPS55134434A JP S55134434 A JPS55134434 A JP S55134434A JP 4185679 A JP4185679 A JP 4185679A JP 4185679 A JP4185679 A JP 4185679A JP S55134434 A JPS55134434 A JP S55134434A
Authority
JP
Japan
Prior art keywords
information
signal
switches
decoding unit
selection circuit
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
JP4185679A
Other languages
Japanese (ja)
Inventor
Hatsuhiko Naito
Yoshitaka Ono
Akira Uenishi
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 JP4185679A priority Critical patent/JPS55134434A/en
Publication of JPS55134434A publication Critical patent/JPS55134434A/en
Pending legal-status Critical Current

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  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To reduce the number of pins connected to a decoding unit, by providing an address selection circuit which gives a retrieval signal selectively to common signal lines and by taking in the information signal, which is generated on the information signal line, through a gate circuit on the basis of this retrieval signal.
CONSTITUTION: Information sources F1WFm are connected to decoding unit 1, and the information signal is supplied to a computer, etc., through switches SW11W SWmn. Address selection circuit 2 is provided which gives a retrieval signal selectively to circuit common signal lines 1G, 2G and mG, and further, gate circuits IG1WIGn for information input are provided which take in information generated on information input lines D0WDm-1 to the computer on a basis of the retrieval signal of selection circuit 2, and these circuits IG1WIGn are operated synchronously with gate circuits T1WTm for information selection of selection circuit 2. Then, switches SW11WSW1m, switches SW21WSW2n, and switches SWm1WSWmn of respective information sources F1WFm are connected to connection pins P1WPm, thus reducing the number of pins of the decoding unit.
COPYRIGHT: (C)1980,JPO&Japio
JP4185679A 1979-04-05 1979-04-05 Decoding unit Pending JPS55134434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4185679A JPS55134434A (en) 1979-04-05 1979-04-05 Decoding unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4185679A JPS55134434A (en) 1979-04-05 1979-04-05 Decoding unit

Publications (1)

Publication Number Publication Date
JPS55134434A true JPS55134434A (en) 1980-10-20

Family

ID=12619883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4185679A Pending JPS55134434A (en) 1979-04-05 1979-04-05 Decoding unit

Country Status (1)

Country Link
JP (1) JPS55134434A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176447A (en) * 1981-04-24 1982-10-29 Fujitsu Ltd A plurality word instantaneous input type digital input circuit system
JPS5933589U (en) * 1982-08-25 1984-03-01 ホーチキ株式会社 Fire alarm equipment repeater
JPS62199843U (en) * 1987-05-29 1987-12-19
JPS63201814A (en) * 1987-02-18 1988-08-19 Hitachi Constr Mach Co Ltd Rotary switch input circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176447A (en) * 1981-04-24 1982-10-29 Fujitsu Ltd A plurality word instantaneous input type digital input circuit system
JPS5933589U (en) * 1982-08-25 1984-03-01 ホーチキ株式会社 Fire alarm equipment repeater
JPS63201814A (en) * 1987-02-18 1988-08-19 Hitachi Constr Mach Co Ltd Rotary switch input circuit
JPS62199843U (en) * 1987-05-29 1987-12-19

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