Three Types Of Computers? Its Features, And Its Limitation

computer: a multipurpose machine

computer:
multipurpose means having many uses.

a computer is a multipurpose machine. using a computer, you can:
1 do calculation and comparisons.
2 make drawing.
3 send messages.
4 chat with friends.
5 type Latter.
6 watch movies.
7 play music and games.
8 store information.

so, we can say that the computer is not an ordinary machine. it is a smart machine.

what makes computer a smart machine?
a computer is a multipurpose, automatic, smart machine which has the following features:

1 it work on electricity.
2 it work on instruction which you give it.
3 it work very fast.
4 it never make mistake.
5 it can do many kind of works at the same time.
6 it can store huge amount of data(words, numbers and pictures).
7 it never get tired.
these are some of the important features of computer.

limitation of computer:

computer do not have their own intelligence. they can not make decisions on their own.
computer needs clear instructions about every step to be performed.
computer needs special care and dust-free environment.

more about computer

various types of computers

computers too are of different types and sizes. they are classified as:
1 desktop personal computer (PC)
2 laptop computer
3 hand-held computer

desktop computer

= a desktop computer is a large size computer that is placed on a desk in an office or home.
= it is not portable.

laptop computers

= a laptop is a small size portable computer that can be placed on your lao.
= portable means that you can carry a laptop wherever you go.

hand-held computers

= a hand-held computer is small enough to be held in one hand.
= these are also called pocket PCs or palmtops.

today’s computers
these days, the latest mobile phones also have features of a computer and are called smart phones. you can add games and other applications
to these smart phones like you do on a computer.

computer languages

in different countries, people speak differentlanguages.
= in USA, people speak English language.
= in china, people speak Chinese language and so on…..
if you need to talk to someone from USA, you need to know the English Language.only then you can talk to him.in the same way, if you need to
make a computer understand the instructions, you need to give the instructions in a computer language.
a computer language is used to communicate with a computer.
there are various computer languages being used to make computer work according to your instructions. some of them are LOGO, QBasic,
HTML, C++ and java.

computer programs

a computer program is the set of commands given to computer with the help of a computer language. for example, the games you play on a
computer are also computer programs. one or more programs which are written to carry out a particular type of work are called a software.

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