please help with research on microsoft??

Question

am doing a assessment and 1 question is to reaseach a major IT company and i have chosen Microsoft however 2 of the questions are
1. Who they are
2. What do they do
i have no idea! can anyone hhelp??

Answer 1

Here ya go:

http://en.wikipedia.org/wiki/Microsoft

Answer 2

Surely you are kidding.
Microsoft is the largest Manufacturer of Computer Operating Systems in the World.
There both answered in one sentence.
Don