![]() Receive Data (Data is received though this pin) These nine pins are roughly divided in to three categories and we will discuss each category below.ĭATA pins (Data flow takes through these pins) The DCE and DTE ports are exactly similar except for the direction of data flow. These nine pins are arranged in the port as shown in RS232 Connector Pinout. New RS232 has nine pins as mentioned earlier. RS232 used to have 25 pin, now it is shrunk to just 9 pin. Although RS232 is later replaced by faster USB (Universal Serial Bus) it is still popular in some areas. RS232 uses serial communication protocol where data exchange is done bit by bit. The need for RS232 came from limitations raised by parallel data exchange. ![]() It was designed for data exchange between DTE (Data Terminal Equipment) or PC and DCE (Data Communication Equipment) or MODEM. ![]() RS232 connector is a port used for data exchange between equipments. ![]()
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