Serial interface in 8051 has following serial communication mode:
2017
Serial interface in 8051 has following serial communication mode:
- A.
one full duplex synchronous and three half duplex asynchronous
- B.
three full duplex asynchronous and one half duplex synchronous
- C.
four asynchronous UART modes
- D.
four synchronous serial
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Correct answer: B
The 8051 serial port has one synchronous shift-register mode and three asynchronous UART modes. The asynchronous modes are full duplex.