KR910001556A - Interface system between keyboard and system CPU in PC - Google Patents

Interface system between keyboard and system CPU in PC Download PDF

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Publication number
KR910001556A
KR910001556A KR1019890009207A KR890009207A KR910001556A KR 910001556 A KR910001556 A KR 910001556A KR 1019890009207 A KR1019890009207 A KR 1019890009207A KR 890009207 A KR890009207 A KR 890009207A KR 910001556 A KR910001556 A KR 910001556A
Authority
KR
South Korea
Prior art keywords
keyboard
transmission
data
communication interface
system cpu
Prior art date
Application number
KR1019890009207A
Other languages
Korean (ko)
Inventor
김홍영
Original Assignee
이헌조
주식회사 금성사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019890009207A priority Critical patent/KR910001556A/en
Publication of KR910001556A publication Critical patent/KR910001556A/en

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  • Communication Control (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

내용 없음No content

Description

PC등에서 키보드와 시스템 CPU간의 인터페이스 시스템Interface system between keyboard and system CPU in PC

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1도는 본 발명에 의한 인터페이스 시스템의 실시예도,1 is an embodiment of an interface system according to the present invention,

제 2도는 제 1도에서 PC(Personal Computer)등의 시스템 CPU측에 구비된 인터페이스 프로그램의 참고도,2 is a reference diagram of an interface program provided on the system CPU side such as a personal computer (PC) in FIG.

제 3도는 제 1도에서 키보드측에 구비된 인터페이스 프로그램의 참고도.3 is a reference diagram of an interface program provided on the keyboard side in FIG.

Claims (1)

시스템 CPU(2)와, 키보드가 연결되는 컨텍터(3)와의 사이에 데이터 통신 인터페이스 회로를 구비시킨 것에 있어서, 상기 데이터 통신 인터페이스회로는 시스템 CPU(2)측의 IOWR 데이터 포트(U1E∼U1L)와 이어져서 라인 제어 논리출력을 발생하는 DFF(U2)와 데이터 전송 및 수신과 동기 클럭을 게이트 제어하는 게이트회로로되는 통신인터페이스 회로(1)로 되며, 상기 CPU(2)에는 키보츠측이 수신모드인가를 체크하여 클럭 동기에 의해 1바이트 체계의 수신동작을 진행하고 전송모드 인가를 체크하여 키보드측으로 데이터를 전송제어하는 일련의 처리과정의 전송제어 인터페이스 프로그램(TIP)과, 상기 키보드 측에는 동기클럭라인을 체크하여 데이터를 읽어들이는 일련의 처리과정의 수신제어 인터페이스 프로그램(RIP)이 마련된 관련 구성을 특징으로 하는 PC등에서 키보드와 시스템 CPU간의 인터페이스 시스템In the case where a data communication interface circuit is provided between the system CPU 2 and the contactor 3 to which the keyboard is connected, the data communication interface circuit includes an IOWR data port U 1 E to the system CPU 2 side. U 1 L) and a DFF (U 2 ) for generating a line control logic output, and a communication interface circuit (1) that is a gate circuit for gate control of data transmission and reception and a synchronous clock. A transmission control interface program (TIP) of a series of processes for checking whether the keyboard side is in reception mode to proceed with a one-byte system by clock synchronization, and checking the transmission mode for transmission to the keyboard side; PC, etc. characterized in that the keyboard side is provided with a reception control interface program (RIP) of a series of processes for checking the synchronous clock line to read data. Standing keyboard and interface between the system CPU system ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890009207A 1989-06-30 1989-06-30 Interface system between keyboard and system CPU in PC KR910001556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890009207A KR910001556A (en) 1989-06-30 1989-06-30 Interface system between keyboard and system CPU in PC

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890009207A KR910001556A (en) 1989-06-30 1989-06-30 Interface system between keyboard and system CPU in PC

Publications (1)

Publication Number Publication Date
KR910001556A true KR910001556A (en) 1991-01-31

Family

ID=68084434

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890009207A KR910001556A (en) 1989-06-30 1989-06-30 Interface system between keyboard and system CPU in PC

Country Status (1)

Country Link
KR (1) KR910001556A (en)

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