JPS5264833A - Key input control circuit - Google Patents

Key input control circuit

Info

Publication number
JPS5264833A
JPS5264833A JP50140970A JP14097075A JPS5264833A JP S5264833 A JPS5264833 A JP S5264833A JP 50140970 A JP50140970 A JP 50140970A JP 14097075 A JP14097075 A JP 14097075A JP S5264833 A JPS5264833 A JP S5264833A
Authority
JP
Japan
Prior art keywords
control circuit
key input
input control
sfk
operated
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
JP50140970A
Other languages
Japanese (ja)
Inventor
Osamu Kondo
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 JP50140970A priority Critical patent/JPS5264833A/en
Publication of JPS5264833A publication Critical patent/JPS5264833A/en
Pending legal-status Critical Current

Links

Landscapes

  • Calculators And Similar Devices (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To make SFK input signal invalid by adding logic of simple structure and only when specific function key SFK is operated after numeral key operation.
COPYRIGHT: (C)1977,JPO&Japio
JP50140970A 1975-11-25 1975-11-25 Key input control circuit Pending JPS5264833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50140970A JPS5264833A (en) 1975-11-25 1975-11-25 Key input control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50140970A JPS5264833A (en) 1975-11-25 1975-11-25 Key input control circuit

Publications (1)

Publication Number Publication Date
JPS5264833A true JPS5264833A (en) 1977-05-28

Family

ID=15281056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50140970A Pending JPS5264833A (en) 1975-11-25 1975-11-25 Key input control circuit

Country Status (1)

Country Link
JP (1) JPS5264833A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4960140A (en) * 1972-10-06 1974-06-11
JPS505700U (en) * 1973-05-11 1975-01-21
JPS5080038A (en) * 1973-11-12 1975-06-28

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4960140A (en) * 1972-10-06 1974-06-11
JPS505700U (en) * 1973-05-11 1975-01-21
JPS5080038A (en) * 1973-11-12 1975-06-28

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