Question

The common unit shared by the receiver unit and transmission unit of serial communication unit is

(a) SCON(Serial Port Control) Register

(b) SBUF(Serial Buffer) register

(c) 8-bit serial data interface

(d) All of the mentioned

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I need to ask this question from Serial Communication Unit topic in division Microcontroller 8051 of Microprocessor

Answer 1

Correct option is (d) All of the mentioned

For explanation: The transmission unit and receiver unit both are controlled by using a common SCON(Serial Port Control) Register. Also both units share a common serial buffer(SBUF) register which is a common 8-bit serial data interface.