First personal computer introduce by IBM in 1981.
IBM ( international business machine)
It has three types.
- Laptop PC
- Desktop PC
- Tower PC
1: Laptop Personal Computer:
Laptop PC are larger version of note book computer. That weight b/w eight and fifteen pound.
2: Desktop Personal Computer:
Desktop PC are the most common type of personal computer and are designed to fit conveniently on the surface of the desk or work space.
3: Tower casing computer:
Tower casing computer are PC in an upright case a full size tower casing provide more room for expanding equipments.