How computer works?

Some computers are used to perform special stuffs. They may be programmed to perform a task, let say for studying earthquake or for controlling some devices. However, the most common type of computers that you can see everywhere is called personal computers, used mainly for surfing the net, watching videos, doing admin task and more. Nowadays alot of manufacturers are competing with each other, building the ever-smaller computers. Well, it’s the trend now, human like mini portable stuffs. A good example will be the macbook air.

Desktop comuters are small enough to sit in your desktop, laptop are small and light enough to be operated on a person’s lap, notebook are portable enough to be carried everywhere and pda are small enough to be held on the palm of your hand.

Minicomputers are more powerful and to be be used by more than one person at a time. For e.g, All cash machine in a store maybe connected to a microcomputer which stores all the financial and inventory data.

Mainframes computer are large powerful and expensive computers, which size of maybe a refrigerators. They are used mainly by government, fbi, banks, airlines etc.

On the other hand, super computers are the fastest and most powerful computers, mainly designed to tackle complicated problems that required a lot of computer time and speed. They may be used for research purposes