A programmable machine. The two principal characteristics of a computer are:
Modern Computers:
Modern computers are electronic and
digital. The actual machinery -- wires,
transistors, and circuits -- is called
hardware; the instructions and
data are called
software.
All general-purpose computers require the following hardware components:
In addition to these components, many others make it possible for the basic components to work together efficiently. For example, every computer requires a
bus that transmits data from one part of the computer to another.
Computer Classification:
Computers can be generally classified by size and power as follows, though there is considerable overlap:
good effort Mr. Sanjeev
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