Principles of Programming
3. Different Types of Language
Low level languages
In old days computers were very large and were not much reliable.
Programming was done by switches and there was no facility to use the
program. This approach of computer programming was completely a
hardware technology. Next the approach of machine language comes up.
In this approach instruction set of the computer consists of some
numerical digits. This instruction set is used to build up a program. This
code is difficult to understand for human beings. Next assembly
language was introduced. In assembly language the numerical codes are
replaced by suitable names which are understandable. This has made
programming easier.
4. High level languages
This type of languages are like English language. But this is more
structured. Actually this type of languages support mathematical
notations used in arithmetic expressions. There are some special rules for
writing programs in high level languages. Pascal, C, C++, Mathematica,
Java, Math lab etc. Ada are all high level languages. High level
languages are easy to write, compile and suitable for error correction.
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