JPS55147834A - Logical integrated circuit easy to check - Google Patents
Logical integrated circuit easy to checkInfo
- Publication number
- JPS55147834A JPS55147834A JP5615679A JP5615679A JPS55147834A JP S55147834 A JPS55147834 A JP S55147834A JP 5615679 A JP5615679 A JP 5615679A JP 5615679 A JP5615679 A JP 5615679A JP S55147834 A JPS55147834 A JP S55147834A
- Authority
- JP
- Japan
- Prior art keywords
- diodes
- group
- signal
- lines
- input signal
- 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
- Tests Of Electronic Circuits (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
- Logic Circuits (AREA)
Abstract
PURPOSE: To facilitate check by making it possible to write an arbitrary signal to the FF group and read the output signal arbitrarily in the logical integrated circuit incorporating a programmable logic array PLA equipped with FFs.
CONSTITUTION: When control signal "0" is applied to control signal line 402, diodes 441∼44N become conductive, and respective produce item lines 1031∼103N become low-potential due to voltage drop of resistors 411∼41N and become unoperatable logically. At this time, the initializing signal is first applied to signal line 302 to initialize FF group 3, and the input signal is input by external input signal lines 1011∼101N and is transferred to input signal lines 2021∼202N through diodes 511∼ 51N, buses 5011∼501N, and diodes 531∼53N and is written to FF group 3. Next, when "1" is applied to all of external input signal lines 1011∼101N, the output signal of FF group 3 is transferred to external output signal lines 2011∼ 201N through diodes 521∼52N, buses 5011∼502N and diodes 541∼54N.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5615679A JPS55147834A (en) | 1979-05-08 | 1979-05-08 | Logical integrated circuit easy to check |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5615679A JPS55147834A (en) | 1979-05-08 | 1979-05-08 | Logical integrated circuit easy to check |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55147834A true JPS55147834A (en) | 1980-11-18 |
JPS6145899B2 JPS6145899B2 (en) | 1986-10-11 |
Family
ID=13019221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5615679A Granted JPS55147834A (en) | 1979-05-08 | 1979-05-08 | Logical integrated circuit easy to check |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55147834A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100649271B1 (en) * | 2004-08-20 | 2006-11-24 | 경원 주식회사 | A Roll Crusher |
-
1979
- 1979-05-08 JP JP5615679A patent/JPS55147834A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100649271B1 (en) * | 2004-08-20 | 2006-11-24 | 경원 주식회사 | A Roll Crusher |
Also Published As
Publication number | Publication date |
---|---|
JPS6145899B2 (en) | 1986-10-11 |
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