Timer / Counter Modes of 8051 - MCQs with Answers

Timer / Counter Modes of 8051 - MCQs with Answers


Q1. Which bit must be set in TCON register in order to start the 'Timer 0' while operating in 'Mode 0'?

a. TR0
b. TF0
c. IT0
d. IE0

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ANSWER: a. TR0



Q2. Who controls the timer1 especially when it is configured as a timer in mode'0',where gate and TR1 bits are attributed to be '1” in TMOD register ?

a. TR1
b. External input at (INT1)
c. TF1
d. All of the above

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ANSWER: b. External input at (INT1)



Q3. Which timer mode exhibit the necessity to generate the interrupt by setting EA bit in IE enhancing the program counter to jump to another vector location ?

a. Mode 0
b. Mode 1
c. Mode 2
d. Mode 3

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ANSWER: b. Mode 1


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