Wednesday, March 19, 2014

PROGRAMMING LANGUAGES

 Computers are machines. Unfortunately they cannot understand natural languages, such
as Hindi, English, Tamil, etc. that human beings speak and understand. Therefore, to give
instructions to computers, different languages have been developed. These languages are called
computer languages. To get a particular work done by computers, programmers write
instructions using these computer languages. Each computer language has its own vocabulary of
a natural language that we speak. Each natural language has its rules and grammar. Similarly,
each computer language too has its set of rules that are called as syntax. As computers are not
intelligent, we have to use the exact syntax rules of the computer language whenever we write
any computer program. Otherwise, the computer will not be able to understand our instructions.
Over the last few decades, several computer languages have developed. Different
computer languages are suitable for different applications. For example, COBOL (Common
business oriented Language) may be more suitable for business applications, whereas
FORTRAN may be more suitable for scientific or engineering applications. We can classify all
computer languages into three categories.

Computer languages are classified into three categories:
1. Machine language
2. Assembly language:
3. High level languages:

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