Basics of Computer
Computer: Computer is 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. Block Diagram: Hardware: The physical components of your computer such as the system unit, mouse, keyboard, monitor etc are called Hardware. Software: The software is the instructions that make the computer work. The software is stored either on your computers hard disk, CD-ROM, DVD or on a diskette (floppy disk) and is loaded (i.e. copied) from the disk into the computers RAM (Random Access Memory), as and when required. INPUT DEVICES: Scanners: A scanner allows you to scan printed material and convert it into a file format that may be used within the PC TouchPads: A device that lays on the desktop and responds to pressure Light Pens: Used to allow users to point to areas on a screen ...