What is system unit:-

Different parts of system unit are as under:

Motherboard: Motherboard is the main board lies inside the system unit which helps to connect all the components and devices with the processor. It is the base of computer. Different sizes of motherboard are avaliable for different computers. Every design is for particular type of processor and memory. Some hardware which are connected with motherboard are

Peripheral devices

Processor

Memory

Expension Cards

Expension Slot

Storage devices

2. Processor: Processor is the brain of computer it is also known as CPU. A processor is used to process all the data given to computer. It is responsible for execution of all the commands from hardware and software. Every type of device uses processor either it is laptop, desktop computer, tablets, smartphones or flat screen television. Some devices use single core processor while some are of dual core. Running two processor side by side means that CPU manages twice the instructions every second. Processor has two units.

a) Control Unit

b) Arithmetic logic Unit