The time taken to perform any task by computer is called speed of computer. As we know computer can work very fast. It takes only few seconds for calculations that we take hours to complete.
You will be surprised to know that computer can perform millions(1,000,000) of instructions and even more per second. The speed of computer is measured in terms of Mega Hertz(MHZ),Giga Hertz(GHZ),etc. Now a days we have GHZ speed computer Hertz is the unit of frequency that is no of signals per second.
The Fractions of seconds are given below.
Unit of time Part of second Unit of speed
Milliseconds(ms) one thousands 1/1,000 kilo hertz(KHZ)=10*3 HZ
Micro seconds one millionth 1/1,000,000 Mega Hertz(MHZ)=10*6 HZ
(ms) one billionth 1/1,000,000,000 Giga Hertz(GHZ)=10*9 HZ
Nanoseconds(ns) one trillionth 1/1,000,000,000,000 Tera Hertz(THZ)=10*12HZ
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