1. Slide 1 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall Power Point Lectures to accompany Tomorrow’s Technology and You, 9e

2. Slide 2 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of America. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

3. Tomorrow’s Technology and You 9/e Chapter 3 Hardware Basics: Peripherals Slide 3 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

4. Tomorrow’s Technology and You 9/e Chapter 3 Objectives List several examples of input devices and explain how they can make it easier to get different types of information into the computer List several examples of output devices and then explain how they make computers more useful Explain why a typical computer has different types of storage devices Diagram how the components of a computer system fit together Slide 4 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

5. Tomorrow’s Technology and You 9/e Chapter 3 Bill Gates Rides the Digital Wave Formed Microsoft with Paul Allen Targeted software for personal computers Operating Systems: MS-DOS, Windows MS Office and Internet Explorer Slide 5 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

6. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Keyboard The most familiar input device QWERTY Used to enter letters, numbers, and special characters Slide 6 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

7. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Types of keyboards  Standard keyboard  Ergonomic keyboards  To address possible medical problems  Wireless keyboard  Folding keyboards  Used with palm-sized computers  One-handed keyboards  Keyboards printed on membranes Slide 7 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

8. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Pointing Devices  Mouse  Touchpad  Pointing stick  Trackball  Joystick  Graphics tablet  Touch screen  Stylus Slide 8 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

9. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Reading Tools  Read marks representing codes specifically designed for computer input Slide 9 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

10. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Reading Tools (cont.)  Optical-mark readers  Magnetic-ink character readers  Bar-code readers  Pen scanners  Tablet PC  Smart whiteboard  RFID (Radio Frequency Identification Readers) Slide 10 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

11. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Digitizing the Real World  Scanners capture and digitize printed images.  Flatbed  Slide  Drum  Sheet fed Slide 11 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

12. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Digital camera  Snapshots captured as digital images  Digital images stored as bit patterns on disks or other digital storage media Slide 12 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

13. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Video digitizer  Capture input from a:  Video camera  Video cassette recorder or television  Convert it to a digital signal  Stored in memory and displayed on computer screens Videoconferencing  People in diverse locations can see and hear each other  Used to conduct long-distance meetings  Video images transmitted through networks Slide 13 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

14. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Audio digitizers  Digitize sounds from  Microphones  Other input devices  Digital signals can be  Stored  Further processed with specialized software  A digital signal processing chip compresses the stream of bits before it is transmitted to the CPU. Slide 14 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

15. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Speech recognition software  Converts voice data into words that can be edited and printed Slide 15 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

16. Tomorrow’s Technology and You 9/e Chapter 3 Input: From Person to Processor Sensors  Designed to monitor physical conditions  Temperature, humidity, pressure  Provide data used in:  Robotics  Environmental climate control  Weather forecasting  Medical monitoring  Biofeedback  Scientific research Slide 16 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

17. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Screen Output  Monitor size: Measured as a diagonal line across the screen  Resolution: The number of pixels displayed on the screen  Pixels (or picture elements): tiny dots that compose a picture  The higher the resolution, the closer together the dots  Image quality affected by resolution and color depth (bit depth).  Color depth refers to the number of different colors a monitor displays at one time Slide 17 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

18. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Screen Output  Monitor classes  CRTs (cathode-ray tubes)  LCDs (liquid crystal displays) Overhead projection panels Video projectors Portable computers Slide 18 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

19. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Screen Output  Video adapter—connects the monitor to the computer  VRAM or video memory—  A special portion of RAM to hold video images  The more video memory, the more picture detail is displayed. Slide 19 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

20. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Paper Output  Printers produce paper output or hard copy.  Two basic groups of printers:  Impact printers  Line printers  Dot-matrix printers Slide 20 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

21. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Paper Output (cont.)  Nonimpact printers  Laser printers Laser beam reflected off a rotating drum to create patterns of electrical charges Faster and more expensive than dot- matrix printer High-resolution output Slide 21 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

22. Paper Output (cont.)  Nonimpact printers  Inkjet printers Sprays ink onto paper to produce printed text and graphic images Prints fewer pages/minute than laser printer High-quality color; costs less than laser printer Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People

23. Paper Output (cont.)  MFP (Multifunction printer), or all-in-one device, combines a scanner, printer, and a fax modem.  A plotter can produce large, finely scaled engineering blueprints and maps. Slide 23 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

24. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Fax Machines and Fax Modems  Fax (Facsimile) machine  Sending:  Scans each page as an image  Converts the image into a series of electronic pulses  Sends those signals over phone lines to another fax  Receiving:  Uses the signals to reconstruct the image  Prints black-and-white facsimiles or copies of the originals  Fax modem  Connect from PC to fax machine via modem and phone line  Translates a document into signals Slide 24 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

25. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Output You Can Hear  Sound card  Enables the PC to: Accept microphone input Play music and other sound through speakers or headphones Process sound in a variety of ways  Synthesizers  Used to produce music, noise Slide 25 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

26. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Controlling Other Machines  Output devices take bit patterns and turns them into nondigital movements.  Robot arms  Telephone switchboards  Transportation devices  Automated factory equipment  Spacecraft  Force feedback joystick Slide 26 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

27. Tomorrow’s Technology and You 9/e Chapter 3 Output: From Pulses to People Rules of Thumb: Ergonomics and Health  Choose equipment that’s ergonomically designed.  Create a healthful workspace.  Build flexibility into your work environment.  Rest your eyes.  Stretch.  Listen to your body.  Seek help when you need it. Slide 27 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

28. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Magnetic Tape  Can store large amounts of information in a small space at a relatively low cost  Limitation: sequential data access  Used mainly for backup purposes Slide 28 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

29. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Magnetic Disks  Random access capability  Floppy disks (1.44 MB)  Provide inexpensive, portable storage  Hard disks  Nonremovable, rigid disks that spin continuously and rapidly  Provide much faster access than a floppy disk Slide 29 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

30. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Optical Disks  Use laser beams to read and write bits of information on the disk surface  Not as fast as magnetic hard disks  Massive storage capacity  Very reliable Slide 30 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

31. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Optical Discs (cont.)  CD – ROM  Optical drives that read CD – ROMs  Holds 700 MB of information  CD – R  WORM media (write-once, read many)  CD – RW  Can read CD – ROMs and write, erase, and rewrite data onto CD – R and CD – RW disks Slide 31 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

32. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Optical Discs (cont.)  DVD (digital versatile disks)  Store and distribute all kinds of data  Hold between 4.7 and 17 GB of information  DVD – ROM drives  Can play DVD movies, read DVD data disks  Read standard CD – ROMs and play audio CDs  Read-only: can’t record data, music, or movies  DVD – RAM drives  Can read, erase, and write data (but not DVD video) on multi-GB DVD – R (but not CD – R or CD – RW) media Slide 32 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

33. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Optical Disks (cont.)  BD drives (Blu – ray)  Hold up to 50 GB of information on two layers  Enough for a full-length HD movie  BD – R  Can read Blu-ray discs, DVDs, and CDs  BD – RW drives  Can read and record on Blu-ray discs, DVDs, and CDs Slide 33 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

34. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Internal and External Drives  Internal drives  Reside in bays inside the system unit  External drives  Connected by USB or Firewire ports  Contained in their own case  May be compatible with more than one OS Slide 34 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

35. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Flash Memory Storage Devices  An erasable memory chip  Compact alternative to disk storage  Contains no moving parts  Designed for specific applications such as storing pictures in digital cameras  Likely to replace disk and tape storage  Large capacity, over 1 GB  Portable Slide 35 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

36. Tomorrow’s Technology and You 9/e Chapter 3 Storage Devices: Input Meets Output Flash Memory Storage Devices (cont.)  SD (secure digital) cards, CF (compact flash), and memory sticks  USB flash drives, also thumb or jump drives Slide 36 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

37. Tomorrow’s Technology and You 9/e Chapter 3 Computer Systems: The Sum of Its Parts Personal Computer Design Classes  Tower systems  Tall, narrow boxes, generally have more expansion slots and bays than other designs  Flat desktop systems  Designed to sit under the monitor like a platform  All-in-one systems (like the iMac)  Combine monitor and system unit into single housing Slide 37 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

38. Tomorrow’s Technology and You 9/e Chapter 3 Computer Systems: The Sum of Its Parts Laptop computers  Include all the essential components, including keyboard and pointing device, in one compact box Slide 38 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

39. Tomorrow’s Technology and You 9/e Chapter 3 Computer Systems: The Sum of Its Parts Ports and Slots Revisited  Legacy ports–outdated due to slow speeds:  Serial Port for attaching devices that send/receive messages one bit at a time (modems)  Parallel Port for attaching devices that send/receive bits in groups (printers)  Keyboard/Mouse Port for attaching a keyboard and a mouse Slide 39 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

40. Tomorrow’s Technology and You 9/e Chapter 3 Computer Systems: The Sum of Its Parts Ports and Slots Revisited (cont.)  Other ports are typically included on expansion boards rather than the system board:  A video port is used to plug a color monitor into the video board.  Microphones, speakers, headphones, MIDI ports are used to attach sound equipment.  An SCSI port allows several peripherals to be strung together and attached to a single port.  A LAN port uses faster connections to a LAN (local area network). Slide 40 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

41. Tomorrow’s Technology and You 9/e Chapter 3 Computer Systems: The Sum of Its Parts Ports and Slots Revisited (cont.)  With the PC open architecture and the introduction of new interfaces, you can hot swap devices.  USB (Universal Serial Bus) transmits a hundred times faster than a PC serial port  Firewire (IEEE 1394) can move data between devices at 400 or more MB per second. The high speed makes it ideal for data-intensive work, like digital video.  FireWire 800, which offers 800 Mbps transfer speeds, was recently introduced on high-end Macintosh systems. Slide 41 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

42. Tomorrow’s Technology and You 9/e Chapter 3 Computer Systems: The Sum of Its Parts Ports and Slots Revisited (cont.)  SATA (Serial-ATA or Serial Advanced Technology Attachment)  Used to connect internal hard drives and optical drives  Can transfer data up to 1200 Mbps Slide 42 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

43. Tomorrow’s Technology and You 9/e Chapter 3 Inventing the Future: Tomorrow’s Peripherals Tomorrow’s Storage  Smaller disks that hold more  A single electron memory chip the size of a thumbnail that can store all of the sounds and images of a full- length feature film Tomorrow’s Output  Goggles that block out everything around you  Retinal displays that work without a screen Slide 43 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

44. Tomorrow’s Technology and You 9/e Chapter 3 Inventing the Future: Tomorrow’s Peripherals Tomorrow’s Input: Sensors  More sophisticated devices will serve as the eyes, ears, and other types of sense organs for computer networks. Slide 44 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

45. Tomorrow’s Technology and You 9/e Chapter 3 Lesson Summary Peripherals allow computers to communicate with the outside world and store information for later use. The most common input devices today are the keyboard and the mouse. A variety of other input devices can be connected to the computer. Output devices perform the opposite function: They accept strings of bits from the computer and transform them into a form that is useful or meaningful outside the computer. Slide 45 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

46. Tomorrow’s Technology and You 9/e Chapter 3 Lesson Summary (continued) Storage devices are capable of two-way communication with the computer. Because of their high-speed random access capability, magnetic disks are the most common forms of storage on modern computers. Slide 46 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall