KR920006136A - Cover Open Checking Method and Circuit Using Key Scan Port of Central Processing Unit of Electronic Typewriter - Google Patents
Cover Open Checking Method and Circuit Using Key Scan Port of Central Processing Unit of Electronic Typewriter Download PDFInfo
- Publication number
- KR920006136A KR920006136A KR1019900014012A KR900014012A KR920006136A KR 920006136 A KR920006136 A KR 920006136A KR 1019900014012 A KR1019900014012 A KR 1019900014012A KR 900014012 A KR900014012 A KR 900014012A KR 920006136 A KR920006136 A KR 920006136A
- Authority
- KR
- South Korea
- Prior art keywords
- processing unit
- central processing
- cover open
- key
- electronic typewriter
- Prior art date
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- Test And Diagnosis Of Digital Computers (AREA)
Abstract
내용 없음No content
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제2도는 이 발명에 따른 중앙처리장치의 키 스캔포트를 이용한 커버오픈 체크회로도.2 is a cover open check circuit using a key scan port of a central processing unit according to the present invention.
제3도는 제2도에서의 중앙처리장치의 키 스캔(Key Scan)출력파형도이다.3 is a key scan output waveform diagram of the central processing unit in FIG.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900014012A KR920006136A (en) | 1990-09-05 | 1990-09-05 | Cover Open Checking Method and Circuit Using Key Scan Port of Central Processing Unit of Electronic Typewriter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900014012A KR920006136A (en) | 1990-09-05 | 1990-09-05 | Cover Open Checking Method and Circuit Using Key Scan Port of Central Processing Unit of Electronic Typewriter |
Publications (1)
Publication Number | Publication Date |
---|---|
KR920006136A true KR920006136A (en) | 1992-04-27 |
Family
ID=67542556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900014012A KR920006136A (en) | 1990-09-05 | 1990-09-05 | Cover Open Checking Method and Circuit Using Key Scan Port of Central Processing Unit of Electronic Typewriter |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR920006136A (en) |
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1990
- 1990-09-05 KR KR1019900014012A patent/KR920006136A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |