2. Based on Size and speed super computer Supercomputer is a broad term for one of the fastest computers currently available in the world. It are very expensive and employed for specialize applications that require immense amounts of mathematical calculations (number crunching). Eg. weather forecasting, scientific design , and analysis of geographical data, satellite communication etc. mainframe computer mainframe was a term originally referring to the cabinet containing the central processor unit or "main frame" of a room-filling stone Age batch machine. The mainframe is a very large and expensive computer capable of supporting hundreds, or even thousands of users simultaneously. The mainframe uses its power to execute many programs concurrently. MiniComputer It is a midsize computer. In the past decade, the large Minicomputers and small mainframe has considered same, however as the distinction between small minicomputers and workstations. A minicomputer is a multiprocessi...
2. Based on Size and speed
super computer
Supercomputer is a broad term for one of the fastest computers currently available in the world. It are very expensive and employed for specialize applications that require immense amounts of mathematical calculations (number crunching). Eg. weather forecasting, scientific design , and analysis of geographical data, satellite communication etc.
mainframe computer
mainframe was a term originally referring to the cabinet containing the central processor unit or "main frame" of a room-filling stone Age batch machine. The mainframe is a very large and expensive computer capable of supporting hundreds, or even thousands of users simultaneously. The mainframe uses its power to execute many programs concurrently.
MiniComputer
It is a midsize computer. In the past decade, the large Minicomputers and small mainframe has considered same, however as the distinction between small minicomputers and workstations. A minicomputer is a multiprocessing system capable of supporting from up to 200 users simultaneously.
MicroComputer or personal computer
The PC can be defined as a small relatively inexpressive computer designed for and individual user it is common to link them together to form a network. The PC is used for word processing, accounting desktop publishing and for running spreadsheet and database management application playing games and recently for surfing the Internet. Today the world of personal computer is basically divided between Apple macintoshes and IBM PCs.
On basis of Brand
IBM computer
The IBM ( international business machine ) was established in 1923 by Dr.Hermann Hollerith. The IBM is the largest computer manufacturing company in the world which introduce wide variety of personal computers and mainframe computers. It has introduced two categories of computer as follows
IBM PC
IBM compatible
Apple macintosh computer
The apple corporation was established in 1970 AD in USA. The corporation had designed architecturally different computer than IBMs was known as Mac/apple computer.
4.On basis of Model
XT
The extended technology based computers are slower for processing based on old technology. The computers contain -4 bit microprocessor or processing unit.
AT
The advanced technology computers are based new computer technology. These computers are faster and operated with any software. They were used 80286,80386,80486 ,Pentium I,PII,PIII microprocessor as processing unit.
PS/2
The PS/2 is the refinement of AT computers. These models were built after 1990s and mostly used in laptop computers
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