KR900003764A - Control circuit of modem and typewriter - Google Patents

Control circuit of modem and typewriter Download PDF

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Publication number
KR900003764A
KR900003764A KR1019880010203A KR880010203A KR900003764A KR 900003764 A KR900003764 A KR 900003764A KR 1019880010203 A KR1019880010203 A KR 1019880010203A KR 880010203 A KR880010203 A KR 880010203A KR 900003764 A KR900003764 A KR 900003764A
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KR
South Korea
Prior art keywords
microcomputer
modem
control circuit
computer
typewriter
Prior art date
Application number
KR1019880010203A
Other languages
Korean (ko)
Inventor
김낙민
Original Assignee
안시환
삼성전자 주식회사
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 안시환, 삼성전자 주식회사 filed Critical 안시환
Priority to KR1019880010203A priority Critical patent/KR900003764A/en
Publication of KR900003764A publication Critical patent/KR900003764A/en

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Abstract

내용 없음No content

Description

모뎀 및 타이프 라이터의 제어회로Control circuit of modem and typewriter

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

제1도는 본 발명의 회로도.1 is a circuit diagram of the present invention.

제2도는 제1도의 흐름도.2 is a flow chart of FIG.

Claims (1)

모뎀 및 타이프라니터를 제어하니 위한 마이크로 컴퓨터(U1)와, 비동기 및 동기 겸용 인터페이스소자 (U2)와 , 모뎀 집적회로(U4)와 타이프라이터를 제어하기 위한 플립플롭(U7)를 포함하여 이루어지는 모뎀 제어회로에 있어서, 마이크로 컴퓨터(U3)의 제어신호(M1-M8)는 멀티플렉서(U5)(U6)의 입력단에 인가되도록 연결하고, 컴퓨터 제어신호(C10-C15)는 멀티프렉서(U5)(U6)에 인가되도록 연결하며, 컴퓨터제어회로(C7-C9)및 통신 인터페이스소자(U2)에 연결하고, 컴퓨터의 데이타 단자(C16-C23)은 마이크로 컴퓨터(U1) 및 통신 인터페이스소자(U2)에 연결하고, 마이크로 컴퓨터(U1)의 동기신호에 의해 3상버퍼 (U8)(U9)가 제어되도록 연결하고, 마이크로 컴퓨터 (U1)의 어드레스신호(A0-A2)에 의해 제어신호 (Q0-Q5)가 컴퓨터에 출력되도록 구성되어지는 것을 특징으로 하는 모뎀 및 타이프 라이터 제어회로.It includes a microcomputer (U 1 ) for controlling modems and typewriters, asynchronous and synchronous interface elements (U 2 ), and flip-flops (U 7 ) for controlling modem integrated circuits (U 4 ) and typewriters. In the modem control circuit, the control signal (M 1 -M 8 ) of the microcomputer (U 3 ) is connected to be applied to the input terminal of the multiplexer (U 5 ) (U 6 ), and the computer control signal (C 10 -C) 15 ) is connected to the multiplexer (U 5 ) (U 6 ), and connected to the computer control circuit (C 7 -C 9 ) and the communication interface element (U 2 ), and the data terminal (C 16- ) of the computer. C 23 ) is connected to the microcomputer (U 1 ) and the communication interface device (U 2 ), so that the three-phase buffer (U 8 ) (U 9 ) is controlled by the synchronization signal of the microcomputer (U 1 ), so that the computer output control signal (Q 0 -Q 5) by the address signals (a 0 -A 2) of the microcomputer (U 1) That which consists of a modem and characterized typewriter control circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880010203A 1988-08-10 1988-08-10 Control circuit of modem and typewriter KR900003764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880010203A KR900003764A (en) 1988-08-10 1988-08-10 Control circuit of modem and typewriter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880010203A KR900003764A (en) 1988-08-10 1988-08-10 Control circuit of modem and typewriter

Publications (1)

Publication Number Publication Date
KR900003764A true KR900003764A (en) 1990-03-27

Family

ID=68137582

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880010203A KR900003764A (en) 1988-08-10 1988-08-10 Control circuit of modem and typewriter

Country Status (1)

Country Link
KR (1) KR900003764A (en)

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