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.
No comments:
Post a Comment