Hardware devices

Input devices I. E. Keyboard devices in any computer system

Out devices I. E. Keyboard mouse microphone etc.

Main memory comprising of ram and rom.

I/o device I. E. Driver, terminal, touch screen etc.

Secondary memory I. E. Hard disk, floppy disk, compact disk, tape etc,

Inter-connectors I. E. Cables, ports, busses etc

Network devices I. E. Modem,bridge,router etc