JPS5525109A - Logic circuit - Google Patents
Logic circuitInfo
- Publication number
- JPS5525109A JPS5525109A JP9696578A JP9696578A JPS5525109A JP S5525109 A JPS5525109 A JP S5525109A JP 9696578 A JP9696578 A JP 9696578A JP 9696578 A JP9696578 A JP 9696578A JP S5525109 A JPS5525109 A JP S5525109A
- Authority
- JP
- Japan
- Prior art keywords
- memory element
- element group
- signal
- logic
- terminal
- 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
- Techniques For Improving Reliability Of Storages (AREA)
- Logic Circuits (AREA)
- For Increasing The Reliability Of Semiconductor Memories (AREA)
Abstract
PURPOSE: To make tests of a memory element easily by making it possible to input and output direct a signal between the memory element and the outside of a printed circuit board where the memory element and logic element are mounted to form a logic circuit.
CONSTITUTION: Either one of an external inout signal from terminal 5 and a signal from logic element group 2 is selected by multiplexer 7 and inputted to memory element group 3. Corresponding to it, either address from terminal 19 or logic element group 16 is selected by multiplexer 18 and supplied to memory element group 3. Read-out data from memory element group 3 are applied to logic element group 33 and also led to terminal 35 via drive 34. The signal selection by multiplexers is carried out by control signals.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9696578A JPS5525109A (en) | 1978-08-09 | 1978-08-09 | Logic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9696578A JPS5525109A (en) | 1978-08-09 | 1978-08-09 | Logic circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5525109A true JPS5525109A (en) | 1980-02-22 |
Family
ID=14178941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9696578A Pending JPS5525109A (en) | 1978-08-09 | 1978-08-09 | Logic circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5525109A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103169U (en) * | 1983-12-19 | 1985-07-13 | 櫻紙管工業株式会社 | Structure of paper tube mouthpiece |
JPS63123561U (en) * | 1987-01-30 | 1988-08-11 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5184530A (en) * | 1974-12-20 | 1976-07-23 | Ibm | Memori areino chokusetsutekitesutookanonishita lsi handotaidebaisu |
-
1978
- 1978-08-09 JP JP9696578A patent/JPS5525109A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5184530A (en) * | 1974-12-20 | 1976-07-23 | Ibm | Memori areino chokusetsutekitesutookanonishita lsi handotaidebaisu |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103169U (en) * | 1983-12-19 | 1985-07-13 | 櫻紙管工業株式会社 | Structure of paper tube mouthpiece |
JPS63123561U (en) * | 1987-01-30 | 1988-08-11 |
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