The Computer Defined

In basic terms, a computer is electronic device that processes data,
Converting it into information that is useful to people.
Any computer regardless of its type is controlled by programmed instructions,
which give the machine a pur-pose and tell it what to do.
A lesser - Known type of computer is the analog computer ,
which work in very different way from digital computer,
The earliest computer were analog computer ,
which work in very different way from digital computer.
The earliest computer were analog system ,and today's
system own a great deal to their analog ancestors.

Analog and Digital computer differ in many respects , but the
most important distinction is the way they represent data
as having one distinct value or another,
with no other possibilities.

Early analog computer were mechanical device,
weighing several tons and using motors and gears to perform calculations.

A More manageable type of analog computer is the old-fashioned slide rule .

Computer can be catego-rized in several ways.
for example , some are meant to be used by groups of people,
and some are not used by people at all.
They also can be catego-rized by their power,
which means the speed at which they operate and the type of tasks they
can handle.
Computer may be subcategorized by price,
the type of hardware they con-tain,the Kinds of softwer they can run,and so on .