JPS5682923A - Automatic power source disconnection device - Google Patents
Automatic power source disconnection deviceInfo
- Publication number
- JPS5682923A JPS5682923A JP15896179A JP15896179A JPS5682923A JP S5682923 A JPS5682923 A JP S5682923A JP 15896179 A JP15896179 A JP 15896179A JP 15896179 A JP15896179 A JP 15896179A JP S5682923 A JPS5682923 A JP S5682923A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power source
- cpu2
- time
- initial value
- 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
Abstract
PURPOSE: To inhibit an electric power source from being disconnected until the processing of CPU ends, by discriminating the operation state of CPU when a set- time elapsed signal from a timer circuit or power source disconnection command from keyboard KB is inputted.
CONSTITUTION: In latch circuit 5, an initial value showing automatic power source disconnection intervals is initially set from CPU2 when the power source is put to work. Every time the key operation of KB1 is performed, key stroke signal KS is sent to timer circuit 3, which loads the initial value, held in circuit 5, into a counter, so that the counter substracts synchronizing with clock CLK. When an input from KB1 arrives before the counter counts down to zero, the initial value in circuit 5 is loaded into circuit 3 at each time and clocking operation is initialized and restarted. As the set time of circuit 3 passes, borrow signal BRW is outputted to discriminating circuit 4. Circuit 4 discriminates the operation state of CPU2; when CPU2 is in operation, the operation of power-off control part 9 is inhibited and on the completion of the operation of CPU, control part 9 is put into operation to disconnect the power source.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15896179A JPS5682923A (en) | 1979-12-07 | 1979-12-07 | Automatic power source disconnection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15896179A JPS5682923A (en) | 1979-12-07 | 1979-12-07 | Automatic power source disconnection device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5682923A true JPS5682923A (en) | 1981-07-07 |
Family
ID=15683128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15896179A Pending JPS5682923A (en) | 1979-12-07 | 1979-12-07 | Automatic power source disconnection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5682923A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5960524A (en) * | 1982-09-29 | 1984-04-06 | Toshiba Corp | Automatic power source cutoff device |
JPS59170920A (en) * | 1983-03-17 | 1984-09-27 | Fujitsu Ltd | Method for controlling disconnection of power supply |
JPS6256956A (en) * | 1985-09-06 | 1987-03-12 | Fujitsu Ltd | Production of heat resistant insulating pattern |
US6108792A (en) * | 1988-09-06 | 2000-08-22 | Seiko Epson Corporation | Article for providing continuity of operation in a computer |
-
1979
- 1979-12-07 JP JP15896179A patent/JPS5682923A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5960524A (en) * | 1982-09-29 | 1984-04-06 | Toshiba Corp | Automatic power source cutoff device |
JPS59170920A (en) * | 1983-03-17 | 1984-09-27 | Fujitsu Ltd | Method for controlling disconnection of power supply |
JPS6256956A (en) * | 1985-09-06 | 1987-03-12 | Fujitsu Ltd | Production of heat resistant insulating pattern |
US6108792A (en) * | 1988-09-06 | 2000-08-22 | Seiko Epson Corporation | Article for providing continuity of operation in a computer |
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