Question

What is the clock source for the timers?

(a) some external crystal applied to the micro-controller for executing the timer

(b) from the crystal applied to the micro-controller

(c) through the software

(d) through programming

I had been asked this question in a dream while sleeping

My question is taken from Timer Programming topic in section 8051 Microcontroller of Microcontroller

Answer 1

Correct choice is (b) from the crystal applied to the micro-controller

Easy explanation: Timer’s clock source is the crystal that is applied to the controller.