JPS5470744A - Control output test circuit - Google Patents
Control output test circuitInfo
- Publication number
- JPS5470744A JPS5470744A JP13805577A JP13805577A JPS5470744A JP S5470744 A JPS5470744 A JP S5470744A JP 13805577 A JP13805577 A JP 13805577A JP 13805577 A JP13805577 A JP 13805577A JP S5470744 A JPS5470744 A JP S5470744A
- Authority
- JP
- Japan
- Prior art keywords
- output
- data
- input
- pattern
- supply
- 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
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
PURPOSE: To prevent the wrong control output from being transmitted to the external apparatus and thus to enhance the reliability of the system by forming a circuit to supply again the output of the control system to secure the fault diagnosis at all times for the input/output device within the system.
CONSTITUTION: Input device 1 to supply the data or the signal of the information or the like is installed, along with arithmetic control unit 2 which calculates the data or signal supplied from device 1 to read out the data stored in the internal memory and then writes the data read out as well as delivers th data. Furthermore, output device 3 is provided to convert the output data of unit 2 into the fixed pattern and then trnasmits the pattern to external apparatus 4. In the input/output control system of such constitution, the pattern given from device 3 is sent to apparatus 4, and the transmission line is provided to supply the output patter to deivce 1 again. Then a collation is given via error test part 5 within unit 2 between the pattern supplied again and the data written at the output time, thus deciding the input and output errors for device 1 and 3 respectively.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13805577A JPS5470744A (en) | 1977-11-16 | 1977-11-16 | Control output test circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13805577A JPS5470744A (en) | 1977-11-16 | 1977-11-16 | Control output test circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5470744A true JPS5470744A (en) | 1979-06-06 |
Family
ID=15212919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13805577A Pending JPS5470744A (en) | 1977-11-16 | 1977-11-16 | Control output test circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5470744A (en) |
-
1977
- 1977-11-16 JP JP13805577A patent/JPS5470744A/en active Pending
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