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Chapter 07: Input and Output McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved Computing Essentials 2012: Making IT Work for You Competencies (Page of 2) • Define input • Describe keyboard entry including the different types of keyboards and keyboard features • Discuss pointing devices including mice, touch screens, joysticks, and styluses • Describe scanning devices including optical scanners and card readers • Discuss image capturing devices including digital cameras and digital video cameras McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-2 Computing Essentials 2012: Making IT Work for You Competencies (Page of 2) • Define output • Discuss monitors features, flat-panel, CRT, e-book readers, data projectors, and HDTVs • Define printing features as well as ink-jet, laser, dot-matrix, thermal, plotter, photo, and portable printers • Discuss audio-output devices • Define combination input and output devices McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-3 Computing Essentials 2012: Making IT Work for You Introduction • Have you ever wondered how information gets into your computer or comes out in a form you can use? – Input devices convert what we understand into what the system unit can process – Output devices convert what the system unit has processed into a form that we can understand McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-4 Computing Essentials 2012: Making IT Work for You What is Input? • Any data or instructions used by a computer • Input devices translate data into a form that the system unit can process • Some hardware input devices include: – – – – McGraw-Hill Keyboards Pointing devices Scanning devices Other devices Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-5 Computing Essentials 2012: Making IT Work for You Keyboard Entry (Page of 2) • Keyboards – – – – – Traditional keyboards Ergonomic keyboards Wireless keyboards PDA keyboards Virtual keyboards • Features – Typewriter keyboard with numeric keypad – Special purpose keys McGraw-Hill • Toggle • Combination Keys Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-6 Computing Essentials 2012: Making IT Work for You McGraw-Hill Keyboard Entry (Page of 2) Traditional Keyboard Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-7 Computing Essentials 2012: Making IT Work for You Pointing Devices (Page of 2) • Mice – – – Mechanical Optical Cordless or wireless • Three similar devices to mice – – – McGraw-Hill Trackball Touch pads Pointing stick Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-8 Computing Essentials 2012: Making IT Work for You Pointing Devices (Page of 2) • Joystick • Touch Screen Multi-touch screen ã Stylus McGraw-Hill Copyright â 2012 The McGraw-Hill Companies, Inc All rights reserved 7-9 Computing Essentials 2012: Making IT Work for You Scanning Devices (Page of 2) • Optical scanners – Flatbed scanners – Document scanners – Portable scanners • Card Readers – – McGraw-Hill Magnetic card readers Radio Frequency card readers Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-10 Computing Essentials 2012: Making IT Work for You Image Capturing Devices • Digital cameras – Images recorded digitally on a disk – Images can be downloaded to a computer • Digital video cameras – – – McGraw-Hill Records motion digitally Can take still images as well WebCams • Specialized digital video cameras • Broadcast images over the Internet Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-12 Computing Essentials 2012: Making IT Work for You Instant Messaging and WebCams • Exchange messages and files with friends • Voice and video capabilities • Application sharing McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-13 Computing Essentials 2012: Making IT Work for You Audio-Input Devices • Voice recognition systems – Use a microphone, a sound card, and special software – Users can operate computers and create documents using voice commands McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-14 Computing Essentials 2012: Making IT Work for You What is Output? • Processed data or information • Types of output – Text – Graphics/Photos – Audio & video • Output devices – – – McGraw-Hill Monitors Printers Other Devices Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-15 Computing Essentials 2012: Making IT Work for You Monitors • • • (Page of 2) Known as screens or display screens Output referred to as soft copy Features – – – – McGraw-Hill Resolution/pixels Dot pitch Refresh rate Size Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-16 Computing Essentials 2012: Making IT Work for You Monitors (Page of 2) • Cathode-ray tube (CRT) monitors • Flat-panel monitors – Require less power to operate – Portable and thinner than CRTs • Other monitors – E-books readers – Data projectors – High-definition television (HDTV) McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-17 Computing Essentials 2012: Making IT Work for You Printers (Page of 2) • Translates information that has been processed by the system unit • Output referred to as hard copy • Features – – – – – McGraw-Hill Resolution Color capability Speed Memory Duplex printing Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-18 Computing Essentials 2012: Making IT Work for You Printers (Page of 2) • Ink-jet printer • Laser printer – Personal laser printers – Shared laser printers • Thermal printer • Other printers – – – – McGraw-Hill Dot-matrix printers Plotters Photo printers Portable printers Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-19 Computing Essentials 2012: Making IT Work for You Audio-Output Devices • Translates audio information from the computer into sounds that people can understand • Common devices – Speakers – Headphones • Digital Music Player – iPod – iRiver McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-20 Computing Essentials 2012: Making IT Work for You Combination Input and Output Devices • • • Fax machines Multifunctional Devices (MFD) Internet telephones – – – McGraw-Hill Known as Internet telephony IP telephony Voice-over IP (VoIP) Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-21 Computing Essentials 2012: Making IT Work for You Internet Telephone Approaches • Computer-to computer – – – Free long distance calls Requires computers to be connected to the Internet MSN is most widely used software • Computer-to traditional telephone – Place the call from a computer to a phone – Requires an Internet phone service provider • Software requirements • Small monthly and/or per-minute fee • Traditional telephone-to-traditional telephone – Does not require a computer – Subscription required to a special Internet phone service provider McGraw-Hill • Special hardware adapter • Cost is similar to the computer-to-traditional telephone approach Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-22 Computing Essentials 2012: Making IT Work for You Careers In IT • Technical writers prepare instruction manuals, technical reports, and other scientific or technical documents • Typically requires a college degree – – – – Communications Journalism English Specialization or familiarization with a technical field • Technical writers can expect to earn $46,500 to $76,500 annually McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-23 Computing Essentials 2012: Making IT Work for You A Look to the Future Electronic Translators May Be in Your Future • Electronic Interpretation may soon exist to provide personal interpretation for foreign languages and images • Prototype portable handheld electronic interpreters are currently in a testing phase at the U.S Office of Naval Research McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-24 Computing Essentials 2012: Making IT Work for You Open-Ended Questions (Page of 2) • Define input devices • Describe the different types of keyboard, pointing, scanning, image capturing, and audio-input devices • Describe the three categories of output devices McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-25 Computing Essentials 2012: Making IT Work for You Open-Ended Questions (Page of 2) • Define output devices • What are combination input and output devices? Give examples of such devices McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc All rights reserved 7-26 ... dot-matrix, thermal, plotter, photo, and portable printers • Discuss audio -output devices • Define combination input and output devices McGraw-Hill Copyright © 2012 The McGraw-Hill Companies, Inc... can use? – Input devices convert what we understand into what the system unit can process – Output devices convert what the system unit has processed into a form that we can understand McGraw-Hill... for You Audio -Input Devices • Voice recognition systems – Use a microphone, a sound card, and special software – Users can operate computers and create documents using voice commands McGraw-Hill
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