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What should be done if we want to double the baud rate?

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in Microcontroller by (14.6k points)
What should be done if we want to double the baud rate?

(a) change a bit of the TMOD register

(b) change a bit of the PCON register

(c) change a bit of the SCON register

(d) change a bit of the SBUF register

This question was posed to me by my college professor while I was bunking the class.

The origin of the question is Serial Port Communication topic in section 8051 Microcontroller of Microcontroller

1 Answer

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by (24.2k points)
Right option is (b) change a bit of the PCON register

To explain I would say: PCON register consists of SMOD bit as its D7 bit, so if we set this bit then the baud rate gets doubled.

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