Most profitable big techs

These 20 firms are leaders in their fields, and have the bank accounts to prove it. Check out how the companies that make the gadgets we love -- and the chips and equipment that power them -- fared on this year's Fortune 500.

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1. Microsoft
Fortune 500 rank: 38
2010 profit: $18.8 billion

The Redmond, Wash.-based software company profits were based on reported record revenues of $62.5 billion, driven in large part by its Windows 7 operating system, which has sold more than 240 million copies.

NEXT: 2. International Business Machines
Last updated May 05 2011: 2:53 PM ET
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