JPS567153A - Parity check circuit - Google Patents
Parity check circuitInfo
- Publication number
- JPS567153A JPS567153A JP8222679A JP8222679A JPS567153A JP S567153 A JPS567153 A JP S567153A JP 8222679 A JP8222679 A JP 8222679A JP 8222679 A JP8222679 A JP 8222679A JP S567153 A JPS567153 A JP S567153A
- Authority
- JP
- Japan
- Prior art keywords
- gates
- logic
- signal
- input bits
- parity check
- 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.)
- Granted
Links
Landscapes
- Detection And Correction Of Errors (AREA)
- Error Detection And Correction (AREA)
Abstract
PURPOSE: To realize the self-check for the parity check circuit by installing independent two sets of gates through which the input bits are divided into plural groups and "1" is delivered when the input bits of logic "1" show the even number and the odd number each and with every group.
CONSTITUTION: The bits 1W7 and P in one byte are divided into plural groups and then supplied to AND gates A35WA38 plus A39WA42 via AND gates A11W A34 each. Gates A35WA38 deliver signal PEO of logic "1" when the input bits of logic "1" show the odd number; while gates A39WA42 deliver signal PEE of logic "1" when the input bits of logic "1" show the even number each. Signal PEE is supplied to OR gate OR via inverse gate NOT along with signal PEO. Then parity error signal PE is delivered from gate OR. As a result, the error of the parity check circuit itself can be detected along with the error of the input data, thus increasing the reliability of the information processor.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54082226A JPS592939B2 (en) | 1979-06-29 | 1979-06-29 | Parity check circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54082226A JPS592939B2 (en) | 1979-06-29 | 1979-06-29 | Parity check circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS567153A true JPS567153A (en) | 1981-01-24 |
JPS592939B2 JPS592939B2 (en) | 1984-01-21 |
Family
ID=13768487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54082226A Expired JPS592939B2 (en) | 1979-06-29 | 1979-06-29 | Parity check circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS592939B2 (en) |
-
1979
- 1979-06-29 JP JP54082226A patent/JPS592939B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS592939B2 (en) | 1984-01-21 |
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