Digital Computer

A digital computer is a machine (also called hardware) that is capable of storing data and executing algorithms. It is made up of the following physical components

1. Central Processing Unit (CPU)

2. Memory

2.1 Primary Memory

Read Only Memory (ROM)

Random Access Memory (RAM)

2.2 Secondary Memory

Includes magnetic, hard disk, floppy diskette, ZIP disk, CD-ROM

3. Input/Output Devices (I/O)

3.1 Input devices include keyboard, mouse, touchpad etc.

3.2 Output devices include display screen, printer, plotter