What are the parts of a computer ?

The word 'Hardware' refers to the physical parts of a computer. The main parts are the monitor, keyboard, the mouse & CPU or central processing unit, which contains the hard disk. The monitor is also known as the screen or VDU (Vidual Display Unit). It looks like a television screen & displays what we do on the computer. It comes in different size. The actual computer i.e. the part that performs tasks we ask it to do is in a unit holding the CPU, memory & hard disk & floppy disks. It comes in a rectangular box. CPU stands for central processing unit. This could be called the brain of a computer. It performs calculation & manipulates data. The keyboard functions like a typewriter. The computer is given commands by typing them on the keyboard information is then displayed on the monitor. The mouse is a hand-held pointing device. By moving the mouse around on a flat surface, a pointer or arrow on the monitor will made corresponding movements. By clicking, holding & dragging with the mouse various things can be done on the monitor.
The hard disk is a fixed device for permanent storage which stays with in the computer . A hard disk is capable of holding tremendous amounts of information, yet it is only a few inches in width & length. A computer also has a floppy disk drive. It is a slot for the insertion of portable disks, also known as floppy disks.