Question

What steps are followed when we need to turn on any timer?

(a) load the count, start the timer, keep monitoring it, stop the timer

(b) load the TMOD register, load the count, start the timer, keep monitoring it, stop the timer

(c) load the TMOD register, start the timer, load the count, keep monitoring it, stop the timer

(d) none of the mentioned

I had been asked this question in homework.

This intriguing question comes from Timer Programming topic in chapter 8051 Microcontroller of Microcontroller

Answer 1

Correct answer is (b) load the TMOD register, load the count, start the timer, keep monitoring it, stop the timer

Easy explanation: When any timer is to turn on, then firstly we have to load the TMOD register and the count. Then the timer is to get started. After then, we need to monitor the timer properly and then when the roll over condition arises then the timer is to be stopped.