GENIUS KNOWLEDGE

1.  What is computer ? Ans.  An electronic device that stores,  retrieves,  and processes data, and can be  programmed with instructions. A  computer is composed of hardware and  software, and can exist in a variety of  sizes and configurations. 2.   Types of Computers ? Ans.    1.Mini Mainframe Computers Very powerful, used by large  organisations such an banks to control  the entire business operation. Very  expensive. 2.Personal Computers Cheap and easy to use. Often used as  stand-alone computers or in a network.  May be connected to large mainframe  computers within big companies. 3.  Hardware Components ? Ans.  INPUT DEVICES (a) The Mouse Used to ‘drive’ Microsoft Windows. (b) The Keyboard The keyboard is still the commonest  way of entering information into a  computer. (c) Tracker Balls an alterna...