JPS5665233A - Microcomputer encoder for keyboard - Google Patents

Microcomputer encoder for keyboard

Info

Publication number
JPS5665233A
JPS5665233A JP14042579A JP14042579A JPS5665233A JP S5665233 A JPS5665233 A JP S5665233A JP 14042579 A JP14042579 A JP 14042579A JP 14042579 A JP14042579 A JP 14042579A JP S5665233 A JPS5665233 A JP S5665233A
Authority
JP
Japan
Prior art keywords
encoder
output
code
terminal
busy
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
JP14042579A
Other languages
Japanese (ja)
Inventor
Sumio Koide
Tatsuro Konuma
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14042579A priority Critical patent/JPS5665233A/en
Publication of JPS5665233A publication Critical patent/JPS5665233A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to operate two encoders as if they were one encoder, by making them have the rollover or lockout function, respectively.
CONSTITUTION: A busy output is connected from the BUSY terminal to the other chip selective terminal CS, the busy output becomes a low level while a code is being sent out, and as long as this low level output is being applied to the CS terminal, the other encoder does not send out the code. And a code output of the encoder 12a or 12b is selected by controlling the gate of the tristate buffers 13a, 13b by RSFF14. In this way, the encoders 12a and 12b can be operated as if they were one encoder.
COPYRIGHT: (C)1981,JPO&Japio
JP14042579A 1979-11-01 1979-11-01 Microcomputer encoder for keyboard Pending JPS5665233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14042579A JPS5665233A (en) 1979-11-01 1979-11-01 Microcomputer encoder for keyboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14042579A JPS5665233A (en) 1979-11-01 1979-11-01 Microcomputer encoder for keyboard

Publications (1)

Publication Number Publication Date
JPS5665233A true JPS5665233A (en) 1981-06-02

Family

ID=15268388

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14042579A Pending JPS5665233A (en) 1979-11-01 1979-11-01 Microcomputer encoder for keyboard

Country Status (1)

Country Link
JP (1) JPS5665233A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0314017A (en) * 1989-06-12 1991-01-22 Sanyo Electric Co Ltd Electronic apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0314017A (en) * 1989-06-12 1991-01-22 Sanyo Electric Co Ltd Electronic apparatus

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