JPS5690331A - Keyboard processing system - Google Patents

Keyboard processing system

Info

Publication number
JPS5690331A
JPS5690331A JP16776179A JP16776179A JPS5690331A JP S5690331 A JPS5690331 A JP S5690331A JP 16776179 A JP16776179 A JP 16776179A JP 16776179 A JP16776179 A JP 16776179A JP S5690331 A JPS5690331 A JP S5690331A
Authority
JP
Japan
Prior art keywords
matrix
key
processor
counting value
code
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
JP16776179A
Other languages
Japanese (ja)
Inventor
Takatoshi Ishii
Takahisa Nakano
Tamaki Hayama
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 JP16776179A priority Critical patent/JPS5690331A/en
Publication of JPS5690331A publication Critical patent/JPS5690331A/en
Pending legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To make a complicated logical circuit unnecessary and simplify the equipment, by scanning the matrix by simple hardware, and executing the code conversion of the key code which has been read by scanning the matrix, by means of the firmware processing of the processor.
CONSTITUTION: The respective key switches constituting the key matrix 1 are made to have the prescribed key codes, respectively, the decoder 2 is controlled by the counting value of the prescribed bit from the oscillating circuit 8 of the counter 3, and the input lines #0W#7 in the line direction of the matrix 1 are scanned in order. Also, the selector 4 for selecting the output of the output signal lines #0W#7 of the matrix 1 is selectively scanned by the counting value of the counter 5, and the keyboard status is provided to the processor 6 and the inhibiting gate 7. Also, the counting value of the counters 3, 5 is provided to the A register as a key code, the code conversion of the key code is executed in accordance with the keyboard processing routine of the storage device, by the processor, and the device can be simplified.
COPYRIGHT: (C)1981,JPO&Japio
JP16776179A 1979-12-24 1979-12-24 Keyboard processing system Pending JPS5690331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16776179A JPS5690331A (en) 1979-12-24 1979-12-24 Keyboard processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16776179A JPS5690331A (en) 1979-12-24 1979-12-24 Keyboard processing system

Publications (1)

Publication Number Publication Date
JPS5690331A true JPS5690331A (en) 1981-07-22

Family

ID=15855597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16776179A Pending JPS5690331A (en) 1979-12-24 1979-12-24 Keyboard processing system

Country Status (1)

Country Link
JP (1) JPS5690331A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221429A (en) * 1982-06-16 1983-12-23 Toshiba Corp Method for controlling repeat in keyboard
US4591833A (en) * 1981-08-13 1986-05-27 Tokyo Shibaura Denki Kabushiki Kaisha Keyboard unit control system using block scanning techniques

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591833A (en) * 1981-08-13 1986-05-27 Tokyo Shibaura Denki Kabushiki Kaisha Keyboard unit control system using block scanning techniques
JPS58221429A (en) * 1982-06-16 1983-12-23 Toshiba Corp Method for controlling repeat in keyboard

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