On the Basis Of size
- Supercomputer: A supercomputer is the more powerful and fastest computer among digital computers. This computer is a special purpose and is capable of handling huge amounts of calculations that are beyond human capabilities. It can perform billions of instructions per second and more. This computer is the most expensive computer. usually, such a computer uses parallel precedent. It used only by large corporations universities and government agencies, scientists research nuclear research work, etc. It requires a large space and a temperature-controlled room. Eg. CRAY X-MP/24,NEC-500, PARAM, ANURAG.
- Mainframe Computer: The mainframe is large in size one of the powerful computer systems. The processing speed of the mainframe computer is slower than supercomputers but faster than mini and personal computers. The largest main. frame computer can handle the processing needs of number of were at any given moment. occupies a very large with an approximate area of 1000 59. ft. It is suitable for big organizations such as banks, insurance companies, airlines, etc.
- Minicomputers: Minicomputers are medium-sized Computers are much larger than the personal computers we are wing and smaller compared to the mainframe computers. These computers can support multiple were simultaneously and is less powerful than mainframe computers. It can handle much more input and output than a microcomputer. This computer is useful for medium-sized business organizations, industries universities. Ege Prime 9755. VAX7500, HCL, MAGNUM, DEC VAX.
- Microcomputer: A computer, which is based on a microprocessor is called a microcomputer. It is a small low-cost digital computer. It required a small place can be placed on a table. This computer has a central processing unit on a single chip. It is mainly used in office houses, schools, shops, and stores. The smallest of this category are laptops, notebooks, palmtops, and PDAs.
On the basis of Brand:
IBM Computer: IBM Stands for International Business Machine. IBM is of the largest computers and other electronic equipment manufacturing company in the world. founded by an American Herman Hollerith in the USA in 1924 AD. The microcomputer of IBM company is called IMB pc. It is a leading company in computer manufacturing. IBM Computers are reliable, durable, and process high-Speed processing.
- IBM PC: This computer is developed by IBM corporation itself so it is also called a “branded” or “original IBM PC“.It is more expensive, more durable, and more reliable than IBM compatible pc. IBM PC is the largest computer manufacturing company established in the USA. The computer is manufactured by IBM PC or branded computer. Personal Computer(PC) is the most important type of microcomputer system. The microcomputer manufacture by IBM company is called IBM PC. These computers are reliable, durable, and have better quality but they are costly
- IBM compatible PC: This computer is developed by companies other than IBM the company but was the parts and principle of IBM. 94 is generally called a duplicate of the IBM pc and it is cheaper than the IBM PC. Egi EPSON, ACER, HP, and DELL.
- Apple/Macintosh Computer
All the computers manufacture by apple cooperation, leading computers manufacturing computers in the USA are known as apple/macintosh computers. These computers use their own software and hardware. They are totally different than that of IBM computers, In terms of both hardware and software. For e.g software developed for apple computers can’t run or IBM computers and vice-versa. Similarly, floppy disk formatting in IBM computers can’t be recognized by apple macintosh computer and vice-versa. It is popularly used in desktop publishing (DTP) houses as they provide a better quality of graphic output.