Definition And Usage

Definition and Introduction

A central processing unit (CPU) is the hardware within a computer that carries out the instructions of a computer program by performing the basic arithmetical, logical, and input/output operations of the system.

A computer can have more than one CPU; this is called multiprocessing.

All modern CPU's are microprocessors, meaning contained on a single chip.

CPU is termed as the brain of the computer.


Parts of a CPU include;

  1. Arithmetic and logic unit, which does calculations.
  2. Control unit, which sends out control signals and instructions in order to control data flow.
  3. Storage unit, which stores data
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