JPS55166753A - Test system for checking circuit - Google Patents
Test system for checking circuitInfo
- Publication number
- JPS55166753A JPS55166753A JP7580779A JP7580779A JPS55166753A JP S55166753 A JPS55166753 A JP S55166753A JP 7580779 A JP7580779 A JP 7580779A JP 7580779 A JP7580779 A JP 7580779A JP S55166753 A JPS55166753 A JP S55166753A
- Authority
- JP
- Japan
- Prior art keywords
- logic
- checking
- illegal data
- output
- 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
- Detection And Correction Of Errors (AREA)
Abstract
PURPOSE: To check errors of all checking circuits at a time by pushing an illegal data generation switch on a panel, by adding an illegal data assignment bit to each checking circuit and by performing AND of the output of each checking circuit.
CONSTITUTION: With the illegal data generation switch, a signal of logic "1" is input from the panel to Ar, Br...Cr and output signals 215, 315,...415 generate logic "1" through exclusive OR when Ap, Bp,...Cp have odd parity bits or logic "1" through exclusive OR when even parity bits. According to whether the value of output signal 501 output from AND circuit 50 receiving output signals 215W415 from checking circuits 200W400 is logic "1", checking circuits when illegal data ArWCr are inserted are checked.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7580779A JPS55166753A (en) | 1979-06-15 | 1979-06-15 | Test system for checking circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7580779A JPS55166753A (en) | 1979-06-15 | 1979-06-15 | Test system for checking circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55166753A true JPS55166753A (en) | 1980-12-26 |
Family
ID=13586830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7580779A Pending JPS55166753A (en) | 1979-06-15 | 1979-06-15 | Test system for checking circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55166753A (en) |
-
1979
- 1979-06-15 JP JP7580779A patent/JPS55166753A/en active Pending
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