HOW OPERATING SYSTEM WORKS

 One cannot understand the function of  what he dont know,so windows xp,vista,windows 7,windows vienna,linux,symbian Os for phone e.t.c are all operating systems with exactly the same functions i.e controlling the softwares and hardwares.
Definition: An operating system (sometimes abbreviated as "OS") is the program that, after being initially loaded into the computer by a boot program, manages all the other programs in a computer.