what are the difference between Windows CE and Windows XP,Vista or 7

December 15, 2010 7:46am CST
when i canvas the laptop online.i saw in mini laptop that have an operating system WINDOWS CE. what are the difference between two of this? do you think all of the application can be install in windows CE? like Mozilla, Google chrome, visual basic, ms office 2007, photoshop cs3 or other application. because on the wondows xp, vista, and windows 7 can be install all of the software and application. what do you think? please the your ideas.