How many nanoseconds does it take for a computer to perform one calculation if it performs $6.7 \times 10 ^ { 7 }$ calculations per second?
A)15 ns
B)67 ns
C)11 ns
D)65 ns

Question

Quizplus · Accepted Answer

To find the time it takes for one calculation, divide 1 second (or $10^9$ nanoseconds, since there are $10^9$ nanoseconds in a second) by the number of calculations per second. Thus, $ \frac{10^9 \text{ ns}}{6.7 \times 10^7} \approx 14.93 $ ns, which rounds to approximately 15 ns.

How Many Nanoseconds Does It Take for a Computer to Perform