Transcription of Devices Input and Output UNIT 4 INPUT OUTPUT DEVICES
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Devices Input and Output UNIT 4 INPUT OUTPUT DEVICES
75 INPUT and OUTPUT DEVICES unit 4 INPUT OUTPUT DEVICES Structure Page No. Introduction 76 Objectives 76 INPUT OUTPUT DEVICES 76 What is a Port ? 78 Parallel Port 78 Serial Port 79 Universal Serial Bus (USB) 79 Small Computer System Interface (SCSI) Port 79 INPUT DEVICES 80 Keyboard 80 Mouse 81 Digitizing (Graphic) Tablet 82 Trackball 82 Joystick 83 Pick DEVICES 84 Light Pens 84 Touch Screens 84 Source Data Entry DEVICES 85 Digital Camera 85 Scanner 86 Optical Mark Reader (OMR) 86 Magnetic Ink Character Reader (MICR) 87 Bar-Code Reader 87 Magnetic Stripe Reader 87 OUTPUT DEVICES 88 CRT Monitor 88 LCD Monitor 89 Thin Film Transistor Liquid Crystal Display (TFT LCD) 90 LED Monitor 90 Projection Displays 90 Printers 93 Plotters 97 Speaker and Microphones 97 Summary 99
Graphics tablet Pen drive CD/DVD Digital Camera An output device is used to send data out of the system. The user sees the result after processing of data by the computer through output devices. Examples of some output devices are: Monitor Printer Plotter Speaker Input and output devices are also called I/O devices.
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