Charles Babbage

John Lickert

John Mauchy

M.V Wilkes

Integrated circuit

Microprocess

Transistors

Vacuum tubes

Bit by bit

2 bits at a time

4 bits at a time

8 bits at a time

CVT

UPS

SMPS

Stablizer

To insert the RAM

To insert the mouse

To insert the keyboard

To insert the additional peripherals