JPS5379437A - Key signal read-in system - Google Patents

Key signal read-in system

Info

Publication number
JPS5379437A
JPS5379437A JP15578176A JP15578176A JPS5379437A JP S5379437 A JPS5379437 A JP S5379437A JP 15578176 A JP15578176 A JP 15578176A JP 15578176 A JP15578176 A JP 15578176A JP S5379437 A JPS5379437 A JP S5379437A
Authority
JP
Japan
Prior art keywords
key signal
signal read
integrated circuit
segment
delivers
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
JP15578176A
Other languages
Japanese (ja)
Other versions
JPS5545931B2 (en
Inventor
Yoshishige Ogawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15578176A priority Critical patent/JPS5379437A/en
Publication of JPS5379437A publication Critical patent/JPS5379437A/en
Publication of JPS5545931B2 publication Critical patent/JPS5545931B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To reduce the number of the input/output pin of an integrated circuit by blocking temporarily the segment decoding output within the integrated circuit and providing a gate circuit which delivers the segment signal line digit signal for display.
COPYRIGHT: (C)1978,JPO&Japio
JP15578176A 1976-12-24 1976-12-24 Key signal read-in system Granted JPS5379437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15578176A JPS5379437A (en) 1976-12-24 1976-12-24 Key signal read-in system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15578176A JPS5379437A (en) 1976-12-24 1976-12-24 Key signal read-in system

Publications (2)

Publication Number Publication Date
JPS5379437A true JPS5379437A (en) 1978-07-13
JPS5545931B2 JPS5545931B2 (en) 1980-11-20

Family

ID=15613260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15578176A Granted JPS5379437A (en) 1976-12-24 1976-12-24 Key signal read-in system

Country Status (1)

Country Link
JP (1) JPS5379437A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114023A (en) * 1975-03-31 1976-10-07 Sharp Corp A control unit for in and output signals
JPS51127621A (en) * 1975-04-28 1976-11-06 Toshiba Corp Data input unit
JPS522327A (en) * 1975-06-23 1977-01-10 Rockwell International Corp Device for driving switch means

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114023A (en) * 1975-03-31 1976-10-07 Sharp Corp A control unit for in and output signals
JPS51127621A (en) * 1975-04-28 1976-11-06 Toshiba Corp Data input unit
JPS522327A (en) * 1975-06-23 1977-01-10 Rockwell International Corp Device for driving switch means

Also Published As

Publication number Publication date
JPS5545931B2 (en) 1980-11-20

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