Microsoft provides 6 versions of Window 7.Different versions having different features.
Starter is only used in USA, on small notebook PC's.
Home Basic only in emerging markets(e.g. Brazil,thailland).
Home Premium is aimed at the home user market.
Professional is the first edition aimed at the business market.
Enterprise & Ultimate Editions both are same in all the features only difference in the license.It contains all the features.
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