A laptop is a note book computer is a type of PC that is small and portable, which means that it can be carried around easily. It is smaller than a desktop computer but run the same application as a desktop computer. It runs on reachable battery and can be use while on the go. The laptop has a ‘clamshell’ from factor with an attached keyboard, touch-pad, and a screen. Both laptop and desktop computer run on desktop operating system such as windows and Mac OS X.