JPS5661663A - Testing device of logic circuit - Google Patents
Testing device of logic circuitInfo
- Publication number
- JPS5661663A JPS5661663A JP13746379A JP13746379A JPS5661663A JP S5661663 A JPS5661663 A JP S5661663A JP 13746379 A JP13746379 A JP 13746379A JP 13746379 A JP13746379 A JP 13746379A JP S5661663 A JPS5661663 A JP S5661663A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- test
- output
- timing
- 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
- Tests Of Electronic Circuits (AREA)
Abstract
PURPOSE: To make possible to change the conventional test in two times into the test in one operation to improve the test efficiency by combining every two systems among plural systems having voltage comparing circuits and comparing circuits.
CONSTITUTION: A tested output signal applied to a terminal 21 is compared with a standard voltage 31 by a voltage comparing circuit 11, the signal thus converted into a logic signal 41 enters a logic comparing circuit 51 via a selecting circuit 91 and is judged by test information 61 set in a test pattern and the timing of a preset judging timing signal 71, and a resulting good or bad signal 81 is output. On the other hand, the output 41 of the voltage comparing circuit 11 is selected by a preset selection signal 10' in a selecting circuit 92, input to a logic comparing circuit 52, judged by expected information 62 set in the test pattern and the timing of a judging timing signal 72, and a resulting good or bad signal 82 is output. A tested output signal to an input terminal 22 is processed in the same way.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13746379A JPS5661663A (en) | 1979-10-24 | 1979-10-24 | Testing device of logic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13746379A JPS5661663A (en) | 1979-10-24 | 1979-10-24 | Testing device of logic circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5661663A true JPS5661663A (en) | 1981-05-27 |
Family
ID=15199186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13746379A Pending JPS5661663A (en) | 1979-10-24 | 1979-10-24 | Testing device of logic circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5661663A (en) |
-
1979
- 1979-10-24 JP JP13746379A patent/JPS5661663A/en active Pending
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