System Unit

A computer case is also known as a

• "computer chassis",

• "tower",

• "base unit" or simply "case".

• "system unit",

Also sometimes incorrectly referred to as the "CPU"

System Unit :

# Case that contains electronic  components of the computer used to process data.

# All computers and mobile devices have a system unit. 

# Inside of System Unit have :

Motherboard

* The main circuit board of the system unit.

Adapter Card

* Slots on the motherboard that can hold adapter cards.

* For adding more memory, graphics capabilities and support for special devices.

Processor

* Slot on the motherboard that houses a CPU and forms the electrical interface with the CPU.

Memory

* Slots on the motherboard that hold memory modules.

* To connect RAM and get faster of the performance of computer.