What is the essence of booth's algorithm?

Question

can anyone explain the essence of booths algorithm and how to use it in machine language?

Answer 1

It occurs to me that this might be best as an answer since without copying and pasting it all in there probably won't be much better:

http://en.wikipedia.org/wiki/Booth%27s_multiplication_algorithm

It seems to have a description, working examples and a discussion of the maths behind it and why it is an efficiency gain over more obvious forms of multiplication.

I suggest that if after reading that you still don't understand something then you ask a new more specific question.