Need help in Digital Voltmeter,op-amps offset,A/D convertor

There 's a college project to buld an autorang voltmeter using op-amps,A/D convertors.....
i need some information about A/D s and Op-amps offset and also it would be nice of u if you send me the schematic of the autorange voltmeter. :twisted: :idea:

How about you do some work and we give advice? I don't like the idea of doing the work for you.