System Unit

The term hardware refers to the various components that make up a PC. This term is used generally to indicate any part of the PC that can be physically touched. This section explains the functions of the basic hardware components in the PC.

The System Unit

The system unit is the main component of the PC to which other components are connected. The system unit contains:

• Motherboard
• Microprocessor or Central Processing Unit (CPU)
• Memory (RAM and ROM)
• Power supply unit
• Disk drives