JPS56114031A - Input data reading in system - Google Patents

Input data reading in system

Info

Publication number
JPS56114031A
JPS56114031A JP1701380A JP1701380A JPS56114031A JP S56114031 A JPS56114031 A JP S56114031A JP 1701380 A JP1701380 A JP 1701380A JP 1701380 A JP1701380 A JP 1701380A JP S56114031 A JPS56114031 A JP S56114031A
Authority
JP
Japan
Prior art keywords
level
line
ports
input
input data
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
JP1701380A
Other languages
Japanese (ja)
Other versions
JPS6240732B2 (en
Inventor
Fumio Ito
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 JP1701380A priority Critical patent/JPS56114031A/en
Publication of JPS56114031A publication Critical patent/JPS56114031A/en
Publication of JPS6240732B2 publication Critical patent/JPS6240732B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/20—Dynamic coding, i.e. by key scanning

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE:To increase the number of input data readings as well as increase the reading speed, by installing a pair of NOR gate circuits at the output port of a digital signal process device which reads the input data. CONSTITUTION:A 4-input NOR circuit comprising the diodes 17-0-17-3, transistor TR11 plus resistances 18-20 is installed at the output ports 6-0-6-3 of the digital signal process device 4. The scanning line 12 led out from the collector of the TR19 is connected to the switching elements 13-0-13-3 each to form a data input matrix circuit. When either one of the ports 6-0-6-3 is at H level, the line 12 is set at L level. When the ports 6-0-6-3 are at L level each, the line 12 is set at H level. As the pulse train emerging on the line 12 is applied to the matrix circuit, the line 12 is set at H level in the time interval t7 during which the scan completes for one of the ports 6-0-6-3 and the next scan is carried out. Thus the elements 13-0-13-3 can read the input pulses. During this period, the pulse reading process is carried out by the software, thus realizing an increment of number of the reading data.
JP1701380A 1980-02-14 1980-02-14 Input data reading in system Granted JPS56114031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1701380A JPS56114031A (en) 1980-02-14 1980-02-14 Input data reading in system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1701380A JPS56114031A (en) 1980-02-14 1980-02-14 Input data reading in system

Publications (2)

Publication Number Publication Date
JPS56114031A true JPS56114031A (en) 1981-09-08
JPS6240732B2 JPS6240732B2 (en) 1987-08-29

Family

ID=11932107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1701380A Granted JPS56114031A (en) 1980-02-14 1980-02-14 Input data reading in system

Country Status (1)

Country Link
JP (1) JPS56114031A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58217038A (en) * 1982-05-07 1983-12-16 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Data input keyboard unit
JPS59189436A (en) * 1983-04-12 1984-10-27 Hitachi Heating Appliance Co Ltd Keyboard switch of electronic range
JPS59182746U (en) * 1983-05-19 1984-12-05 日本ビクター株式会社 Switch status reading device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58217038A (en) * 1982-05-07 1983-12-16 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Data input keyboard unit
JPS59189436A (en) * 1983-04-12 1984-10-27 Hitachi Heating Appliance Co Ltd Keyboard switch of electronic range
JPS59182746U (en) * 1983-05-19 1984-12-05 日本ビクター株式会社 Switch status reading device

Also Published As

Publication number Publication date
JPS6240732B2 (en) 1987-08-29

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