UNIT 1

Introduction to computer

1. Introduction

1.0.1     Steps to start a Computer.

1.0.2 Steps to shutdown a Computer.

1.0.3 Step to restart a Computer.

1.0.4 Full Form of Computer.

1.1 What is Computer?

1.1.1 History of computers.

1.1.2 Generation of Computer

1.1.3 Types of Computer

1.1.4 Diagram of Computer

1.1.5 Functions of Computer

1.1.6 Characteristics of computer

1.1.7 Advantages of Computer

1.1.8 Disadvantages of computer

1.1.9 Usage of Computer

1.2 Components of Computer

1.2.0 Block Diagram of Computer

1.2.0.1 Inside in a Computer Case

1.2.1 Central Processing Unit (CPU)

1.2.1.1 Components of CPU

1.2.1.2 Function of CPU

1.2.2 Computer Motherboard

1.2.2.1 Components of Motherboard

1.2.2.2 Function of Motherboard

1.2.2 Input Device

1.2.2.1 Keyboard

1.2.2.2 Mouse

1.2.2.3 Touch Screen

1.2.2.4 Trackball & Joystick

1.2.2.5 Microphone

1.2.2.6 Webcam

1.2.2.7 Scanning Device

1.2.2.8 Barcode Reader

1.2.2.9 Recognition Devices

1.2.2.10 OMR

1.2.2.11 OCR

1.2.2.12 MICR

1.2.3 Output Device

1.2.3.1 Monitor

1.2.3.2 Printer

1.2.3.3 Speaker

1.2.3.4 Projector

1.2.4 Storage Devices

1.2.4.1 Hard Disk

1.2.4.2 Compact Disc

1.2.4.3 Digital Video Disc

1.2.4.4 Pen Drive

1.2.4.5 Memory Card

1.2.4.6 Portable Hard Disc

1.2.5 Basic of Input Output Ports

1.2.6 Computer Memory

1.2.5.1 Primary Memory

1.2.5.1.1 Random Access Memory

Static RAM

Dynamic RAM

1.2.5.1.2 Read Only Memory

1.2.6.1 Cache Memory

1.2.6.2 Secondary Memory

1.2.6.3 Register Memory