Answer:
A computer is an electronic device that accepts data, processes it, stores it, and then produces an output.
There are four kinds of computers:
- Supercomputers
- Mainframe computers
- Minicomputers
- Microcomputers (Personal computers)
Supercomputers – Supercomputers are expensive, very fast, and the most powerful computers we have in the world. They are optimized to execute a few numbers of programs. This makes it possible for them to execute these few programs at a very high speed. Due to their inhibiting cost, they are used in high-end places like scientific research centers. The supercomputer consists of thousands of processors making it clock at very high speeds measured by petaflops.
Mainframe computers – These are large and expensive computer types capable of supporting hundreds, or even thousands, of users simultaneously. Thus, they are mostly used by governments and large organizations for bulk data processing, critical applications, transaction processing, census, industry, and consumer statistics among others. They are ranked below supercomputers.
Minicomputers — Minicomputers are mid-sized computers. In terms of size and power, minicomputers are ranked below mainframes. A minicomputer is a multiprocessing system capable of supporting from 4 to about 200 users simultaneously.
Microcomputers or Personal computers – These are computers designed to be used by one user at a time. The term microcomputer relates to the microprocessor which is used with a personal computer for the purpose of processing data and instruction codes. These are the most common computer types since they are not very expensive