JPS54107629A - Key input unit - Google Patents

Key input unit

Info

Publication number
JPS54107629A
JPS54107629A JP1426678A JP1426678A JPS54107629A JP S54107629 A JPS54107629 A JP S54107629A JP 1426678 A JP1426678 A JP 1426678A JP 1426678 A JP1426678 A JP 1426678A JP S54107629 A JPS54107629 A JP S54107629A
Authority
JP
Japan
Prior art keywords
key
cpu
input
outputs
key group
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
JP1426678A
Other languages
Japanese (ja)
Other versions
JPS5732805B2 (en
Inventor
Takashi Nishida
Masaaki Maekawa
Susumu Genban
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP1426678A priority Critical patent/JPS54107629A/en
Publication of JPS54107629A publication Critical patent/JPS54107629A/en
Publication of JPS5732805B2 publication Critical patent/JPS5732805B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To save the number of keys, by independently driving each microprocessor with equality and by establishing the key input unit in common use the input of one key group for each processor.
CONSTITUTION: The flip flop 9 controls the signal selection circuit 6 that it is selected to the signal path inputted to the key group 3 for the signal from the outputs a4 to a7 of CPU 1 with Q output when S input is present and it is that from the outputs a11 to a14 when R input is present. For example, the key of the key group 4 is depressed, then the information is read in CPU 1 and pulse is given to C1, setting FF9. Thus, the signal selection circuit 6 holds so that the outputs a4 to a7 of CPU 1 are turned on and those a11 to a14 of CPU 2 are turned off. When the key of the key group 5 is depressed, the conditions are contraverse.
COPYRIGHT: (C)1979,JPO&Japio
JP1426678A 1978-02-10 1978-02-10 Key input unit Granted JPS54107629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1426678A JPS54107629A (en) 1978-02-10 1978-02-10 Key input unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1426678A JPS54107629A (en) 1978-02-10 1978-02-10 Key input unit

Publications (2)

Publication Number Publication Date
JPS54107629A true JPS54107629A (en) 1979-08-23
JPS5732805B2 JPS5732805B2 (en) 1982-07-13

Family

ID=11856281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1426678A Granted JPS54107629A (en) 1978-02-10 1978-02-10 Key input unit

Country Status (1)

Country Link
JP (1) JPS54107629A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184716U (en) * 1985-05-08 1986-11-18
JPS61185130U (en) * 1985-05-08 1986-11-18

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60111202U (en) * 1983-12-29 1985-07-27 石川島検査計測株式会社 Impact test lateral bulge measuring device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217727A (en) * 1975-07-25 1977-02-09 Bunker Ramo Apparatus having master and auxiliary keyboard terminal devices
JPS5288946U (en) * 1975-12-25 1977-07-02
JPS52150939U (en) * 1976-05-12 1977-11-16

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5217727A (en) * 1975-07-25 1977-02-09 Bunker Ramo Apparatus having master and auxiliary keyboard terminal devices
JPS5288946U (en) * 1975-12-25 1977-07-02
JPS52150939U (en) * 1976-05-12 1977-11-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184716U (en) * 1985-05-08 1986-11-18
JPS61185130U (en) * 1985-05-08 1986-11-18
JPH022734Y2 (en) * 1985-05-08 1990-01-23

Also Published As

Publication number Publication date
JPS5732805B2 (en) 1982-07-13

Similar Documents

Publication Publication Date Title
JPS5325324A (en) Address selection system
JPS54107629A (en) Key input unit
JPS5553762A (en) Computer with function for function
JPS5255315A (en) Data transmission control unit
JPS52154328A (en) Electronic cash register containing tax calculation function
JPS5324754A (en) Electronic type cash register
JPS5343421A (en) Chinese character input device
JPS5356936A (en) Transfer control system
JPS5334444A (en) Electronic cash register
JPS52102634A (en) Character display
JPS5368128A (en) Key input system
JPS533122A (en) Input unit
JPS5530746A (en) Specification set system for electronic cash register
JPS5344140A (en) Electronic cash register
JPS5315727A (en) Electronic desk-top calculator
JPS547922A (en) Predominant change-over device for electronic instrument
JPS5330827A (en) Numerical display system
JPS52153337A (en) Desk-top electronic calculator
JPS5270728A (en) Unit ticket vendor
JPS5361239A (en) Small-size electronic computer
JPS5525162A (en) Electronic desk calculator
JPS5225502A (en) Selective operation unit
JPS51149723A (en) Key input system
JPS5364422A (en) Key input unit
JPS5333537A (en) Display control system