Explain the types of computer programming lanuages with its merits and demerits of each.?

Answer 1

First of all, phrasing your question like an actual question rather then a demand might convince more people to help you. Secondly, there are way to many programming languages to even give an overview of here. Try this Wikipedia entry, a list of programming languages according to type: http://en.wikipedia.org/wiki/Categorical_list_of_programming_languages

Answer 2

Like said, there are many. It also depends on the hardware. There are many and much bigger computers out there other than the PC. They use a variety of lanquages that are not commonly found on the PC and vise versa.