JPS5614336A - Input switch malfunction preventing circuit - Google Patents
Input switch malfunction preventing circuitInfo
- Publication number
- JPS5614336A JPS5614336A JP8960479A JP8960479A JPS5614336A JP S5614336 A JPS5614336 A JP S5614336A JP 8960479 A JP8960479 A JP 8960479A JP 8960479 A JP8960479 A JP 8960479A JP S5614336 A JPS5614336 A JP S5614336A
- Authority
- JP
- Japan
- Prior art keywords
- malfunction
- switch
- rom
- dependent
- circuit
- 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
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE: To prevent generation of interruption dependent upon a malfunction, by writing an inputtable switch pattern into a ROM previously and by adding the gate circuit, which is controlled by this ROM, to the interruption generating circuit.
CONSTITUTION: The next inputtable switch pattern is written at the address designated by address inputs A0, A1 and A2 of ROM 8 so that this switch pattern may be expressed by outputs P0, P1 and P2 if this address is used as the preceding switch input pattern. Gate circuits 9...11 are controlled by the output of ROM8 to output the switch input dependent upon the normal operation. Meanwhile, gate circuits 12...14 are controlled by the output of ROM 8 to cause the switch input dependent upon a malfunction to pass through. When switch 1 is turned on due to the malfunction, the input signal passes through circuit 12 and is input to FF 16 through OR circuit 15 to display the malfunction on 17 with luminescence. As a result, generation of interruption dependent upon the malfunction can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8960479A JPS5614336A (en) | 1979-07-13 | 1979-07-13 | Input switch malfunction preventing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8960479A JPS5614336A (en) | 1979-07-13 | 1979-07-13 | Input switch malfunction preventing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5614336A true JPS5614336A (en) | 1981-02-12 |
Family
ID=13975355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8960479A Pending JPS5614336A (en) | 1979-07-13 | 1979-07-13 | Input switch malfunction preventing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5614336A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4581182A (en) * | 1985-02-21 | 1986-04-08 | Air-O-Lator Corporation | Submersible mixer with air injection |
-
1979
- 1979-07-13 JP JP8960479A patent/JPS5614336A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4581182A (en) * | 1985-02-21 | 1986-04-08 | Air-O-Lator Corporation | Submersible mixer with air injection |
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