2. Computer
A computer is a general purpose device
which can be programmed to carry out a
finite set of arithmetic or logical
operations. Since a sequence of
operations can be readily changed, the
computer can solve more than one kind
of problem. The essential point of a
computer is to implement an idea, the
terms of which are satisfied.
Conventionally, a computer consists of
at least one processing element and
some form of memory.The processing
element carries out arithmetic and logic
operations, and a sequencing and
3. Computer
A computer's processing unit executes a
series of instructions that make it read,
manipulate and then store data.
Conditional instructions change the
sequence of instructions as a function of
the current state of the machine or its
environment.
In order to interact with such a machine,
programmers and engineers developed
the concept of a user interface in order
to accept input from humans and return
results for human consumption.
The first electronic digital computers
were developed between 1940 and 1945
4. Computer
Modern computers based on integrated
circuits are millions to billions of times
more capable than the early machines,
and occupy a fraction of the space.
Simple computers are small enough to
fit into mobile devices, and mobile
computers can be powered by small
batteries. Personal computers in their
various forms are icons of the
Information Age and are what most
people think of as "computers".
However, the embedded computers
found in many devices from mp3
players to fighter aircraft and from toys
