I want to make a report about Digital Ohmmeters ,Can anyone help me?

Answer 1

Hi:

Look up Ohm meter and learn how they work and the look up Analog to digital Conversion circuits and this will tell how they work Check out www.HowStuffworks.com they have a detail explanation on how they work. and look for who deals in digital Ohmmeters. Radio Shack is a good place to start.

Hope this helps

Answer 2

You can start here:
http://en.wikipedia.org/wiki/Ohmmeter
http://en.wikipedia.org/wiki/Digital_multimeter