I've never heard of a computer part named birthday. There is a type of virus attack called a birthday attack.
it is the computer or referred to computer.
Motherboard.
Hardware
the main part of a computer system is called central processing unit or also known as CPU
Its Called The Computer, The Top Part Is Called The Screen The Metal Box Is Also Called The Hard-drive
The cpu
The CPU is considered the "brain" of the computer, and since the brain is part of our nervous systems, this would be your answer.
Component... Hardware.... CPU.... Memory...
Hardware
hardware
Spacewar!The ! is part of the name.
Domain Name