JPS5264833A - Key input control circuit - Google Patents
Key input control circuitInfo
- 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
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
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)
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 |
-
1975
- 1975-11-25 JP JP50140970A patent/JPS5264833A/en active Pending
Patent Citations (3)
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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