A personal computer (PC) is a desktop device performing office work and is designed to be used by one person at a time. When a computer is used by other computers on the network, it is known as a server. The computer network are inter networked to form the internet.
History of PC
Original component set was popularized by Apple and IBM consists of several components connected by cables
Transportable computer was popularized by Osborne and Compaq contains the computer components housed in one transportable unit.
The newest of PC is battery powered and can fit in briefcase because of advancing micro technology the size of computer has little to do with its capability. These battery powered PC have different names according to their nature of functions. There is laptop, notebook, tablets, smart phones, eBook gadgets, iPad etc