1. the central processing unit (CPU).
The central processing unit (CPU: Central Processing Unit), or often called a microprocessor. Is responsible for processing the data in the manner of calculation and comparison by runs on the exact timing? Called when a Clock signal is beat one time events can occur 1 time we call the units used to measure the speed of the CPU that "hoet" (Herzt) Meant to work many times in 1 second, such as Pentium4 CPU with speed of 2.5 GHz means working speed 2,500 million times. In one second. In case the signal Clock speed will make it. With high speed. The CPU that is running very fast, very expensive price will be. The shop will have to buy to suit the tasks that need to be applied, such as the need to apply the third sting with much processing. Necessary to use a machine with a faster processor. To print the report, the General section use the speed of 100 MHz.