A computer is one bright creation of mankind. computers perform a vast range of functions. some computer is so powerful that hundreds or even thousands of users can use them at a single time. There is four main type of computers namely Microcomputers, minicomputers, Mainframes and Supercomputers.
   microcomputer, also called a personal computer, is a digital computer that works on a microprocessor. microcomputers are small machines designed for individual users. Average people who have a basic information about computers can use microcomputers. Individuals in homes and offices are the major users of the microcomputer. It is an Inexpensive computer that performs a task such as a word processing, Desktop Publishing, & Accounting. It is also useful for running spreadsheet and database management applications.

                            Microcomputers are widely used for entertainment purposes as well as for playing games, listening to music And watching movies. The microcomputers are also widely used to access the internet. 
Ex- IBM PC I/O card, Panel Pc Series
1.low cost
2. small size
   Minicomputers are midsized multiprocessing & multiuser computer. multiprocessing is the process of running multiple programs or processes at a given time. the minicomputer is a medium range computer. it is also as a mid-range server. Minicomputers fall in between the microcomputers & Mainframes. it is used in business administrations for the maintenance of accounts and financial data and applications. minicomputers are more powerful & it is compatible with a microcomputer.

1.low cost – minicomputers are ideal for small size companies, in the manufacturing processes, & scientific research. As compared to microcomputers, they are large.
Ex– Open Mini Pc, Fit-Pc, MSI Mini PC etc.
 Initially, mainframes were huge computer occupying entires rooms or floors. Mainframes were used to serve as the midpoint of large systems in companies. they were designed to serve the purpose of centralized computing the size of the mainframes has reduced and the processing efficiency has increased.
                      They now served distributes users & small servers in a computing network. they are also known as enterprises servers. Mainframes are very large and expensive computers. thousands can use a mainframe at the same time. it can process millions of transactions every day.


1.Large Memory– Mainframes are widely used in large companies worldwide. mainframes are widely used in a government organization.
Ex- Z10 Mainframes
A supercomputer is the fastest and most expensive type of computer. supercomputers specialize in high-speed processing of data. an application that uses large amounts of calculations supercomputers. some of the application is molecular chemistry, nuclr=ear research, weather reports, and advanced physics.

               a supercomputer can be a single or multiple computer systems. in multiple computer systems, a supercomputer comprises several computers that work in parallel as a single system. the benefits of supercomputers is their speed, which is unmatched by any other type of computer. 


                    A major disadvantage of supercomputers is that they produce a large amount of heat during their operation. Hence it is important to use operative cooling solutions.

Ex-Cray Jaguar, IBM Roadrunner, IBM NORC etc.

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