KR970049309A - I / O Pin Count Expansion Unit of Computer System - Google Patents
I / O Pin Count Expansion Unit of Computer System Download PDFInfo
- Publication number
- KR970049309A KR970049309A KR1019950048656A KR19950048656A KR970049309A KR 970049309 A KR970049309 A KR 970049309A KR 1019950048656 A KR1019950048656 A KR 1019950048656A KR 19950048656 A KR19950048656 A KR 19950048656A KR 970049309 A KR970049309 A KR 970049309A
- Authority
- KR
- South Korea
- Prior art keywords
- latch circuit
- address
- pin count
- microprocessor
- computer system
- Prior art date
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- Microcomputers (AREA)
Abstract
본 발명은 마이크로 프로세서의 기능을 변경하지 않고 입출력 핀수를 확장시켜 기존 마이크로프로세서의 소프트 웨어와 하드웨어를 그대로 활용하도록 하는 컴퓨터 시스템의 입출력 핀수 확장 장치에 관한 것이다.The present invention relates to an input / output pin count expansion device of a computer system that expands the input / output pin count without changing the function of the microprocessor so that the software and hardware of the existing microprocessor can be utilized as it is.
특히,본 발명은 마이크로 프로세서의 어드레스 및 데이타 버스 각각에 래치 회로각 및 어드레스 디코더를 결합시켜 래치 회로부 각각에 입출력부를 두도록 구성하였다.In particular, the present invention is configured such that the latch circuit angle and the address decoder are coupled to the address and data buses of the microprocessor, respectively, so that the input and output portions are placed in the latch circuit portions.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명의 회로 블록도.1 is a circuit block diagram of the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950048656A KR970049309A (en) | 1995-12-12 | 1995-12-12 | I / O Pin Count Expansion Unit of Computer System |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950048656A KR970049309A (en) | 1995-12-12 | 1995-12-12 | I / O Pin Count Expansion Unit of Computer System |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970049309A true KR970049309A (en) | 1997-07-29 |
Family
ID=66594494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950048656A KR970049309A (en) | 1995-12-12 | 1995-12-12 | I / O Pin Count Expansion Unit of Computer System |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970049309A (en) |
-
1995
- 1995-12-12 KR KR1019950048656A patent/KR970049309A/en not_active Application Discontinuation
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Legal Events
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WITN | Withdrawal due to no request for examination |