What is a computer ?
By Shahbaz Ahmed
A computer generally means
a programmable machine. The two principal characteristics of a computer are: it responds to a specific set of
instructions in a well-defined manner and it can
execute a prerecorded list of instructions (a
program).
Modern Computers Defined
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: By Size and Power
Computers can be generally classified by size and power as follows, though there is considerable overlap:
Top 5 Computer Related Questions
1.
What is computer history?2.
What is computer hardware?3.
What is computer software?4.
What is computer science?5.What is computer interface?
