Computer organization

Question

How many cycles are required for a 100 MHz processor to execute a program which requires 5 seconds of CPU time?

(a) 10^9 cycles (b) 50 × 10^7 cycles (c) 10^8 cycles (d) 50 cycles

Solution:​ Option (b)

Answer 1

Time taken by program = 5s.

Speed of Processor = 100MHz.

Therefore , clock time per cycle = 1/100MHz = 10 ^ *(-8) s

Now , 10 ^ (-8) s ----------- 1 clock cycle
   

    1s ------------------ 10^8 clock cycles

        5s------------------- 5x10^8 clock cycles = 50x10^7 clock cycles