Based on size and capability, computers are boldly classified into
1. Microcomputer(personal computer)
A microcomputer is the smallest general purpose processing system. The older PC started 8 bit processor with speed of 3.7MB and current PC 64 bit processor with speed of 4.66GB.
Examples:- IBM Pcs,APPLE computers
Microcomputer can be classified into 2 types :
a) Desktops
B)portables
The difference is portables can be used while traveling whereas desktops computer cannot be carried around.
The different portable computers are:-
1)Laptop
2)Notebooks
3)plamtop(hand held)
4)Wearable computers
Laptop:- this computer is similar to a desktop computer but the size is smaller. They are expensive than desktop. The weight of laptop is around 3 to 5 kg.
Notebook :- These computers are as powerful as desktop but size of these computers are comparatively smaller than and desktop. They wegohy2 to 3 kg. They are more costly than laptop.
Plamtop (hand held) :- They are also called as personal Digital Assistant (PDA). These computers are small in size. They can be held in hands. Itvis capable of doing word processing, spreadsheets and hand writing recognition, game playing, faxing and paging. These computers are not as powerful as desktop computers. Ex :- 3com plam V.
Wearable computer :- The size of this computer is very small so that it can be worn on the body. It has smaller processing power. It is used in the field of medicine . For example pace maker to correct the heart beats. Insulin meter to find the levels of insulin in the blood .
2. Minicomputer :- A minicomputer is a medium-sized computer. That is more powerful than a microcomputer. These computers are usually designed to serve multiple users simultaneously (parallel processing). They are more expensive than microcomputers.
Examples:- Digital alpha ,sun ultra.
Mainframe computers:- computers with large storage capacities and very high speed of processing (compared to mini -or microcomputer) are know as mainframe computers.
Supercomputer :- supercomputer extremely large storage capacity and computing speed which are many times faster than other computers. A supercomputer is the measured in terms of tens of millions instructions per second (MIPS), an operation is made up numerous instructions.
