7 : Hewlett-Packard Co.
|Top 100 Revenue:
|2010 earnings :
|Number of employees:
||Palo Alto, Calif.
||Léo Apotheker, CEO and president
|Head of gov't business:
||Dennis Stolkey, senior vice president, U.S. Public Sector, HP Enterprise Services
|Lines of business:
||Personal systems group, imaging and printing group and enterprise business
||Homeland Security Department, Treasury Department, Energy Department, Defense Department, Navy, Air Force and Veterans Affairs Department
Sources: Washington Technology, Federal Procurement Data System and Houlihan Lokey