Perfect Computer Notes

Q1. Define Hardware. What are different types of hardware? The physical parts of a computer are called hardware. Hardware can be touched or seen by us. Different types of hardware components are as follows: Input devices (keyboard, mouse, scanner, digital camera etc.) The Central Processing unit (CPU/Processor) Output devices (monitor, printer, plotter, speaker, data projector etc.) Memory chips (RAM, ROM etc.) Storage devices (hard disk, Floppy disk, CD, DVD etc.) Q2. Define Input devices. INPUT DEVICES:Input devices are used to enter data and instructions into computer memory from external world. Examples include: Keyboard, Mouse, Track ball, Track Pad, Joy stick, Touch Screen, Light pen, Touch Screen, Scanner, Digital Camera, Microphone, Q3. Define Output device. Output devices:Out put devices are used to display results of processing to the user. They perform the following functions: Examples include: Monitor, printer, plotter, speaker Pr...