JPS562027A - Multiple electronic computer unit - Google Patents
Multiple electronic computer unitInfo
- Publication number
- JPS562027A JPS562027A JP7647679A JP7647679A JPS562027A JP S562027 A JPS562027 A JP S562027A JP 7647679 A JP7647679 A JP 7647679A JP 7647679 A JP7647679 A JP 7647679A JP S562027 A JPS562027 A JP S562027A
- Authority
- JP
- Japan
- Prior art keywords
- contacts
- output signal
- buses
- units
- cpu2
- 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
- Hardware Redundancy (AREA)
Abstract
PURPOSE: To obtain an economical multiple electronic computer unit composed of a small number of elements, by properly changing output signal buses, corresponding to process output units of electronic computers, by an output signal change-over unit equipped with a reverse-current preventing circuit.
CONSTITUTION: Process output signal buses 8 and 9 are provided which correspond to process output units 3 and 5 of CPU2, 4. In change-over unit 6, buses 8 and 9 are provided with contacts 2b and 4b which are open at the time of the fault of CPU2, 4 and contacts 2a and 4a which are closed when the CPUs are in operation, and contacts 2a and 2b, and 4a and 4b are connected to electric power common line 10 in series. Further, buses 8 and 9 are connected to output signal contacts a1Wan and b1Wbn of units 3 and 5 through reverse-current preventing circuit 11 with detour preventive diodes and furthermore connected to process 7 via those contacts. Those contacts are brought under adequate switching control, so that only the output signal of unit 3 or 5 or AND between output signals of units 3 and 5 can be supplied to process 7.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7647679A JPS562027A (en) | 1979-06-18 | 1979-06-18 | Multiple electronic computer unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7647679A JPS562027A (en) | 1979-06-18 | 1979-06-18 | Multiple electronic computer unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS562027A true JPS562027A (en) | 1981-01-10 |
Family
ID=13606233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7647679A Pending JPS562027A (en) | 1979-06-18 | 1979-06-18 | Multiple electronic computer unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS562027A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60116053A (en) * | 1983-11-29 | 1985-06-22 | Mitsubishi Electric Corp | Process input-output device |
-
1979
- 1979-06-18 JP JP7647679A patent/JPS562027A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60116053A (en) * | 1983-11-29 | 1985-06-22 | Mitsubishi Electric Corp | Process input-output device |
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