Classification of Computers

Classification of Computers : Computers used presently are called digital computers. Examples of digital computers are 6 Programming in C PC (Personal Computers) PC|XT (PC with Extended Technology) PC|AT (PC with Advanced Technology) Classification of digital computers is as follows :

(i) Microcomputers : All Pentium I, II, III, IV are in this category. These are of four types as shown below PC PC/XT PC/AT Portable. Laptop Handheld PDA (Personal digital assistant)

 (ii) Minicomputers : These have more than one terminals for different users – upto 32 approx. UNIX operating system is must for such computers

 (iii) Mainframe Computers : These support more than 32 users, upto 128 users. e.g. VAX 8350 One such at Punjab University Chandigarh (supports all researchers & student of the university) These have VMS Operating System.

(iv) Super Computers : These are fastest computers having multiple processors. These are useful for some specific areas of applications such as
 − Weather forecasts
− Fluid Dynamics
− Vector Processing
 − Molecular Dynamics.
 One such at Meteorological Deptt. at Delhi, is CRAY XMP-14, which provides all weather bulletins. (Seymour Cray - father of super computers) others are PARAM Supercomputer (Developed by C-DAC, Pune). ANURAG Supercomputer (installed at BARC, Bombay).


(v) Ultra Computers : These are still to be created/designed but with good intelligence/knowledge like human beings.

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