UNIT 4 INPUT OUTPUT DEVICES

Structure

4.0 Introduction

4.1 Objectives

4.2 Input Output Devices

4.3 What is a Port?

4.3.1 Parallel Port

4.3.2 Serial Port

4.3.3 Universal Serial Bus (USB)

4.3.4 Small Computer System Interface (SCSI) Port

4.4 Input Devices

4.4.1 Keyboard

4.4.2 Mouse

4.4.3 Digitizing (Graphic) Tablet

4.4.4 Trackball

4.4.5 Joystick

4.5 Pick Devices

4.5.1 Light Pens

4.5.2 Touch Screens

4.6 Source Data Entry Devices

4.6.1 Digital Camera

4.6.2 Scanner

4.6.3 Optical Mark Reader (OMR)

4.6.4 Magnetic Ink Character Reader (MICR)

4.6.5 Bar-Code Reader

4.6.6 Magnetic Stripe Reader

4.7 Output Devices

4.7.1 CRT Monitor

4.7.2 LCD Monitor

4.7.3 Thin Film Transistor Liquid Crystal Display (TFT LCD)

4.7.4 LED Monitor

4.7.5 Projection Displays

4.7.6 Printers

4.7.7 Plotters

4.7.8 Speaker and Microphones

4.8 Summary