Question

The atleast number of machine cycles for which the external interrupts that are programmed level-sensitive should remain high is

(a) 1

(b) 2

(c) 3

(d) 0

I got this question by my school principal while I was bunking the class.

I would like to ask this question from Interrupt and Stack of 8051 -1 in section Microcontroller 8051 of Microprocessor

Answer 1

Right option is (b) 2

For explanation I would say: The external interrupts, programmed level-sensitive should remain high for atleast 2 machine cycles.