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SERIAL COMMUNICATION BY WIRES


The SERIAL COMMUNICATION has two types :

1. D-TYPE 25 pin connector

2. D-TYPE 9 pin connector.

The pin outs of both D-9 & D-25 are show below.

D-Type-9 pin no.

D-Type-25 pin no.

Pin outs

Function

3

2

RD

Receive Data (Serial data input)

2

3

TD

Transmit Data (Serial data output)

7

4

RTS

Request to send (acknowledge to modem that UART is ready to exchange data

8

5

CTS

Clear to send (i.e.; modem is ready to exchange data)

6

6

DSR

Data ready state (UART establishes a link)

5

7

SG

Signal ground

1

8

DCD

Data Carrier detect (This line is active when modem detects a carrier

4

20

DTR

Data Terminal Ready.

9

22

RI

Ring Indicator (Becomes active when modem detects ringing signal from PSTN

You can use this way to conect two computer in order to share information.

You can boot from serial port, you can get win95, i know it, because i did it. I used two programs for it.

Interlnk.exe

Intersvr