Serial Communication Modes of 8051 - MCQs with Answers
Serial Communication Modes of 8051 - MCQs with AnswersQ1. Which two bits are supposed to be analyzed / tested for unity value (1) in SCON for the reception of byte in mode 1 serial communication ?
a. RI & TI
b. REN & RB8
c. RI & REN
d. TI & RB8View Answer / Hide Answer Q2. What is the bit transmitting or receiving capability of mode 1 in serial communication?
a. 8 bits
b. 10 bits
c. 11 bits
d. 12 bitsView Answer / Hide Answer Q3. Which pin in the shift register mode (Mode 0) of serial communication allow the data transmission as well as reception ?
d. RENView Answer / Hide Answer Q4. How is the baud rate determined on the basis of system clock frequency (fsc) in accordance to mode '0' of serial communication?
a. (oscillator frequency) / 12
/ 32] x (oscillator frequency) / [12 x (256 – (TH1) ]
/ 64] x (oscillator frequency)
/ 32 x (Timer 1 overflow rate) View Answer / Hide Answer
ANSWER: a. (oscillator frequency) / 12