HOW COMPUTERS ARE WORKING?

The invention of computers has changed man's every day life. It can do things better than human beings do. Even a child knows what is a Computer? A Computer is a electronic device that can perform multiple tasks.
Computer does not knows anything by itself. It just performs the operation/set of tasks given by the programmer/user.The programs uses set/group of statements for a particular task.These are achieved by the LANGUAGES. Some of the languages are Fortran, Cobol, C, C++, C#, Java.. etc. The computers do not understand ordinary human languages. For that the Compilers are used.
The Compiler used in the computers converts the HLL to MLL(HLL - High Level Language, MLL - Machine Level Language). Here they are converted into BITS, i.e., 0 's and 1's they form various combination of numbers. When something is stored in Computer they are stored in memory locations.
Each memory unit has unique location.All these operations are controlled by the Control Unit. the control unit , ALU and the memory unit are all in the CPU other wise called as the brain of the computer.
The speed of the computers are measured in terms of MB/GB.