2. Copyright © 2003 Prentice Hall, IncSlides created by Bob Koziel

3. 2 Copyright © 2003 Prentice Hall, Inc Tips for using the slide show Use MS Power Point XP to view the presentation. Earlier versions will not show the animations correctly. Slides with : Click the slide to view all of its sections and animations. Some slides need to be clicked several times. will appear once the last object on the slide has appeared. Click to go to the next slide. represents an Internet link that will take you to the Web site when you click on it. Internet connection required. Clicking on the or icon will take you to the previous or the next slide. Slides with videos or sounds: Click on the picture to view videos or listen to sounds. NEXT SLIDE I NEXT SLIDE Copyright © 2003 Prentice Hall, Inc

4. 3 Normal View 1. Right-click on the video or sound image. 2. For videos, point to Media Clip Object and select Play. 3. For sounds, select Play Sound. 4. A dialog box will appear that will enable you to locate the file. 5. Follow directions 3-6 in Slide Show View. 6. Save the PPT with the new link. NEXT SLIDE Copyright © 2003 Prentice Hall, Inc This set of slides contain video and/or sound files. Preview the slide show on the computer that will be used in class. If the video or sound does not play, follow one of the set of directions below. Tips Addendum Slide Show View 1. Click on the video or sound image. 2. A dialog box will appear that will enable you to locate the file. 3. Select the location where the PPTs are stored on the hard drive, server, or CD. 4. Open the appropriate folder and select the appropriate file. 5. Click Open. 6. Click on the video or sound image again. 7. Save the PPT with the new link.

5. 4 Copyright © 2003 Prentice Hall, Inc Chapter 3 Input and Output: Data In, Information Out COMPUTERS IN YOUR FUTURE 2004 COMPUTERS IN YOUR FUTURE 2004 by Bryan Pfaffenberger and Bill Daley Chapter 3 Input and Output: Data In, Information Out What You Will Learn NEXT SLIDE The various types of input and output and their purposes The differences between a computer keyboard and a typewriter keyboard The special keys and their purpose The pros and cons of speech recognition as an alternative to keyboard use The various types of printers, monitors, and pointing devices Devices used to get sound, video, and images into the computer

6. 5 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Input Input is any data entered into the computer’s memory. Types of input include:  Data– Unorganized information (words, numbers, images, or sounds) that the computer converts to meaningful information.  Software– Programs transferred from storage devices to the computer’s memory.  Commands– Instructions that tell the computer what to do.  Responses– Prompts requiring user feedback.

7. 6 Copyright © 2003 Prentice Hall, Inc Digital Cameras Microphone Touch Screen Keyboard & Mouse Wand Reader Stylus Pen NEXT SLIDE Input Devices: Giving Commands Input devices are types of hardware that enable you to get programs, data, commands, and responses into the computer’s memory.

8. 7 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Keyboard The keyboard allows the computer user to enter words, numbers, punctuation, symbols, and special function commands into the computer’s memory.

9. 8 Copyright © 2003 Prentice Hall, Inc Enhanced / Extended KeyboardErgonomic Keyboard NEXT SLIDE Types of Keyboards Enhanced or Extended keyboard– Typically 101 keys laid out in the QWERTY fashion; connected to the computer by a serial cable. Cordless keyboard– Uses infrared or radio wave signals. Ergonomic keyboard– Designed to help prevent cumulative trauma disorder (CTD) or damage to nerve tissues in the wrist and hand due to repeated motion.

10. 9 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Pointing Devices Pointing devices enable the user to control the movements of an on-screen pointer. They enable the user to initiate commands and to respond to the active program. They are used to provide input in graphics programs.

11. 10 Copyright © 2003 Prentice Hall, Inc PS/2 Mouse Cordless Mouse NEXT SLIDE Types of Mice PS/2– Most commonly used; connects to PS/2 port or USB port. Serial– Not commonly used; connects to a serial port. Bus– Obsolete; connects to an expansion card. Cordless– Uses infrared signals; must be within sight of the receiving port.

12. 11 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE How a Mouse Works Mouse buttons enable the user to initiate actions.  Clicking (left-, right-, or double-clicking) allows the user to select an item on the screen or open a program or dialog box.  Click and drag– Holding down the left mouse button and moving the mouse enables the user to move objects on the screen. A mechanical mouse uses a rotating ball to position the pointer on the screen. An optical mouse uses laser light to determine the pointer position.

13. 12 Copyright © 2003 Prentice Hall, Inc Foot Mouse Joystick Touch Pad Touch Screen Trackball Pointing Stick Pen NEXT SLIDE Other Types of Pointing Devices

14. 13 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Speech Recognition Speech recognition is a type of input in which the computer recognizes words spoken into a microphone. Special software and a microphone are required. Latest technology uses continuous speech recognition where the user does not have to pause between words.

15. 14 Copyright © 2003 Prentice Hall, Inc Digital Cameras Digital Video Videoconferencing Web Cams Click on the picture to play video Click on the titles to view more information NEXT SLIDE Optical Input Devices

16. 15 Copyright © 2003 Prentice Hall, Inc Scanners Flatbed Handheld Fax Machines NEXT SLIDE Other Input Devices

17. 16 Copyright © 2003 Prentice Hall, Inc Bar code reader NEXT SLIDE Magnetic-ink character recognition– Used by banks to process checks Biological feedback devices– Use body movements as input Chemical detectors– Molecules of chemicals are used as input Image Processing Systems Image processing systems are used in business, industry, and science to input data without manually keying it in.

18. 17 Copyright © 2003 Prentice Hall, Inc Digital Cameras The image’s light falls on a charge-coupled device (CCD) which transforms the light’s patterns into pixels. Images are stored in the camera using flash memory. The most popular types are CompactFlash and SmartMedia. Photo-editing programs enable the user to edit the images. Good pictures can be taken using point-and-shoot cameras. Single-lens reflex (SLR) digital cameras are expensive and used by professional photographers. RETURN

19. 18 Copyright © 2003 Prentice Hall, Inc Digital Video A video capture board transforms analog video into digital video. Codecs or compression/decompression standards are used to compress digital video files. A frame rate of 24 frames per second (fps) is needed to produce a continuous smooth action. RETURN

20. 19 Copyright © 2003 Prentice Hall, Inc Videoconferencing Videoconferencing is using digital video technology to simulate face-to-face meetings. Whiteboards, which are a a part of the screen, can be used to write or draw. RETURN

21. 20 Copyright © 2003 Prentice Hall, Inc Web Cams Web cams provide low-resolution videoconferencing for Internet users. The images are small and jerky. RETURN

22. 21 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Output Devices Output devices are peripheral devices that enable us to view or hear the computer’s processed data. Visual output– Text, graphics, and video. Audio output– Sounds, music, and synthesized speech.

23. 22 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Visual Display System A visual display system is composed of two parts:  Video adapter– Responsible for video quality.  Monitor– Displays the video adapter’s output.

24. 23 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Video Adapter A video adapter is also called display adapter, video card, or graphics card.  It plugs into an expansion slot on the motherboard.  It contains memory called video RAM (VRAM).  It is designed to work with digital or analog monitors.  It converts digital signals to analog.  It determines a monitor’s maximum resolution (VGA/Super VGA).  It determines a monitor’s refresh rate. 3D graphics adapter– Enables 3-dimensional images. Multi-display video adapter– Permits a connection of two monitors at a time.

25. 24 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Monitor A monitor is a peripheral device which displays computer output on a screen. Screen output is referred to as a soft copy.

26. 25 Copyright © 2003 Prentice Hall, Inc CRTLCD NEXT SLIDE Types of Monitors Cathode-ray tube (CRT)– Resemble televisions; use picture tube technology; inexpensive, but they take up desk space and use a lot of energy. Liquid Crystal Display (LCD or flat-panel)– Cells sandwiched between two transparent layers form images; used for notebook computers, PDAs, cellular phones, and personal computers; expensive, and they take up less desk space and use less energy than CRT monitors. Types of LCD monitors:  Passive-matrix LCD  Active-matrix LCD  Gas plasma display  Field emission displays

27. 26 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Monitor Specifications Screen size– The diagonal measurement of the screen surface in inches (15, 17, 19, 21). Resolution– The sharpness of the images on the screen determined by the number of horizontal and vertical pixels that the screen can display (800x600, 1024x768, 1600x1200). Dot pitch– The distance between each pixel on the screen measured in millimeters (.22mm,.25mm,.28mm). Refresh rate– The speed at which the screen is redrawn (refreshed) measured in Hertz (Hz) (60Hz, 75Hz).

28. 27 Copyright © 2003 Prentice Hall, Inc Televisions as Monitors Televisions have low resolution; therefore, they produce poor quality computer output. An NTSC (National Television Standards Committee) converter is needed to connect a computer to a TV. High Definition Television (HDTV) is designed to use digital signals. Digital TVs enable interactive use. NEXT SLIDE

29. 28 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Printers A printer is a peripheral device that produces a physical copy or hard copy of the computer’s output. Two basic types:  Impact printer  Nonimpact printer

30. 29 Copyright © 2003 Prentice Hall, Inc Impact printerDot-matrix NEXT SLIDE Impact Printer An impact printer is a printer that has a print head that contacts the paper to produce a character. It uses ink ribbon. It is noisy, produces Near-letter quality printouts, and is not commonly used today. Dot-matrix– Pins are used to make characters.

31. 30 Copyright © 2003 Prentice Hall, Inc Inkjet Laser NEXT SLIDE Nonimpact Printer The nonimpact printer is the most commonly used printer today. It works quietly compared to an impact printer. Two types of nonimpact printers:  Inkjet printer– Also called bubble-jet; makes characters by inserting dots of ink onto paper; letter-quality printouts; cost of printer is inexpensive but ink is costly.  Laser printer works like a copier; quality determined by dots per inch (dpi) produced; color printers available; expensive initial costs but cheaper to operate per page.

32. 31 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Multifunction Printer A multifunction printer combines the functions of a nonimpact printer, scanner, fax machine, and copier in one unit.

33. 32 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Plotter A plotter is a printer that uses a pen that moves over a large revolving sheet of paper. It is used in engineering, drafting, map making, and seismotology.

34. 33 Copyright © 2003 Prentice Hall, Inc WMAMIDIMP3WAV Beethoven 1:15 min Rocky 2:56 min Hornsby 48 sec Cheers 15 sec Click an icon to play music Click the icon again to stop playing Try clicking on Cheers while playing music NEXT SLIDE Audio Output Audio output is the ability of the computer to output sound. Two components are needed:  Sound card– Plays contents of digitized recordings.  Speakers– Attach to sound card. Digital formats include WAV, MPEG, MP3, and MIDI.

35. 34 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Chapter 3 Summary 1.Input is the software, data, and information that is entered into the computer’s memory. 2.Input devices such as the keyboard, mouse, and trackball enable the user to enter data. 3.A pointing device enables the user to control movements of an on-screen pointer. 4.The different types of mice include the PS/2 mouse, serial mouse, and cordless mouse. 5.Speech recognition software enables the user to enter data into a computer by speaking into a microphone. 6.Video and images can be entered into a computer by way of digital cameras, scanners, and fax modems. 1.Input is the software, data, and information that is entered into the computer’s memory. 2.Input devices such as the keyboard, mouse, and trackball enable the user to enter data. 3.A pointing device enables the user to control movements of an on-screen pointer. 4.The different types of mice include the PS/2 mouse, serial mouse, and cordless mouse. 5.Speech recognition software enables the user to enter data into a computer by speaking into a microphone. 6.Video and images can be entered into a computer by way of digital cameras, scanners, and fax modems.

36. 35 Copyright © 2003 Prentice Hall, Inc NEXT SLIDE Chapter 3 Summary cont. 7.Monitors enable the user to view the computer’s processed data. The output is known as soft copy. 8.Two types of monitors are the CRT and the LCD. 9.A monitor’s quality is measured by screen size, resolution, dot pitch, and refresh rate. 10.Printers produce permanent versions (hard copies) of the computer’s output. 11.Two basic types of printers are the impact and non impact printer. 7.Monitors enable the user to view the computer’s processed data. The output is known as soft copy. 8.Two types of monitors are the CRT and the LCD. 9.A monitor’s quality is measured by screen size, resolution, dot pitch, and refresh rate. 10.Printers produce permanent versions (hard copies) of the computer’s output. 11.Two basic types of printers are the impact and non impact printer.

37. 36 Copyright © 2003 Prentice Hall, Inc THE END