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Chapter 12

Chapter 12. Notebooks, PDAs, and Printers. You Will Learn…. How to support, upgrade, and add peripheral devices to notebooks About technologies relating to personal digital assistants (PDAs) How printers work and how to troubleshoot them. Notebook Computers. Notebook Computers.

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Chapter 12

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  1. Chapter 12 Notebooks, PDAs, and Printers

  2. You Will Learn… • How to support, upgrade, and add peripheral devices to notebooks • About technologies relating to personal digital assistants (PDAs) • How printers work and how to troubleshoot them

  3. Notebook Computers

  4. Notebook Computers • Use same technology as PCs, but with modifications • Use less power • Take up less space • Can withstand movement and jars • Use thin LCD panels for display • Use small memory modules and CPUs • Cost more than comparable PCs

  5. Power sources AC adapter DC adapter Battery pack Types of batteries Ni-Cad (nickel-cadmium) NiMH (nickel-metal-hydride) Lithium Ion Future battery solution Fuel cell battery Notebook Computers

  6. Notebooks versus PCs • Notebooks • Generally purchased as a whole unit; not likely to upgrade hardware and OS • Tend to be proprietary • Have some universal support issues, but procedures vary between brands • PCs • Highly modular • Components can be interchanged, upgraded, and enhanced

  7. Types of Memory Used by Notebooks

  8. Upgrading Memory

  9. Upgrading Memory

  10. Upgrading Memory

  11. Hard drive LCD panel Motherboard CPU Keyboard PC Card socket assembly CD-ROM drive Floppy drive Sound card Pointing device AC adapter Battery pack DC controller Other Field Replaceable Units (FRUs) for Notebooks

  12. Comparing Hard Drives

  13. Replacing a Hard Drive

  14. Connecting Peripheral Devicesto Notebooks • Port on notebook itself • Port replicator • Docking station • PC Card • Also called PCMCIA (Personal Computer Memory Card International Association) Card • USB port

  15. Connecting Peripheral Devices via Notebook Ports

  16. Connecting Peripheral Devices via a Port Replicator

  17. Example of a Docking Station

  18. Connecting Peripheral Devices via PC Cards

  19. PC Cards • Once intended only for memory cards, PC Card slots are now used by many devices • Four standards • Latest specification: CardBus • Improves I/O speed • Increases bus width to 32 bits • Supports lower-voltage PC Cards while maintaining backward compatibility • Three types (Type I, Type II, and Type III), which vary in thickness

  20. PC Cards • OS must provide two services • Socket service • Card service • Might contain a data cable to an external drive, or might be self-contained • Other smaller slots include one for a Secure Digital (SD) Card and one for a Compact Flash Card • Can be hot-swapped • Can interface with a network

  21. PC Cards

  22. PC Cards

  23. PC Cards

  24. Using a PC Card to Interface with a Network

  25. Adding Devices with a USB Port • Popular way of adding devices to notebooks • Easy installation

  26. Adding Devices with a USB Port

  27. Supporting Notebooks • Apply same troubleshooting guidelines as for desktop PCs • Be aware of warranty issues • Loaded OS and hardware configuration are specific; see documentation for details

  28. Notebook Manufacturers

  29. PDAs • Small, handheld computers with their own OS and applications • Battery powered • Use either a grayscale or color active matrix or dual-scan passive matrix display • Can sometimes benefit from additional memory • Include a stylus • Might use an AC/DC adapter • Might have fold-out keyboard option

  30. PDAs

  31. Optional Accessories for PDAs

  32. Considerations When Purchasing a PDA • What applications come with it; what can be added later? • Easy to use? Thorough documentation? • Is synchronization easy? • What support is available from manufacturer? • Type of batteries? Battery life? continued…

  33. Considerations When Purchasing a PDA • Can it use e-mail and the Web? Extra hardware or software required? • Can additional devices be purchased? • What OS does it use? How easy to use? • What is the warranty? • What is the price?

  34. Battery Life on a PDA • Short battery life is the one largest complaint; risk losing data and applications if battery runs all the way down • Use cradle and adapter

  35. Applications on a PDA • Some come with all application software preinstalled • Some require user to download applications at additional cost • Some support applications that come preinstalled and cannot download others • Some allow downloading e-mail or Web site content • Some can access Internet directly by way of a modem or wireless connection

  36. Connecting a PDA to a PC • Synchronization • Process by which PDA and PC “talk” to each other through universal cradle, cable, and USB or serial connection • Capabilities • Backup information from PDA to PC • Work with PDA files on PC and download applications from Web • Some PDAs synchronize with a desktop or notebook computer through wireless technology

  37. PDA Operating Systems • Principal difference between the two main OSs for PDAs is in the applications they support • Pocket PC • More versatile • Palm OS • Less complex • Easier to use • Best choice for simple tasks

  38. PDA OS Manufacturers

  39. Printers • Local printers connect directly to computer via parallel port, serial port, USB port, infrared connection, wireless connection, IEEE 1394 port, SCSI port, or PC Card connection • Network printers are accessed over the network

  40. Main Types of Printers • Laser • Ink-jet • Dot-matrix • Thermal printers and solid ink printers

  41. Laser Printers • Use electrophotographic process • Range from small, personal desktop models to large network printers capable of handling and printing large volumes continuously • Require interaction of mechanical, electrical, and optical technologies

  42. How a Laser Printer Works • Places toner on electrically charged rotating drum • Deposits toner on paper as paper moves through the system at same speed the drum is turning

  43. Cleaning Conditioning Writing Developing Transferring Fusing Take place inside toner cartridge Use components that undergo the most wear Six Steps of Laser Printing

  44. Six Steps of Laser Printing

  45. Step 1: Cleaning

  46. Step 2: Conditioning • Conditions drum to contain a high electrical charge

  47. Step 3: Writing • Laser beam discharges a lower charge to only those places where toner is to go

  48. Step 3: Writing • Data from PC is received by formatter (1) and passed to DC controller (2) which controls laser unit (3) • Scanning mirror (4) is turned clockwise by scanning motor • Laser beam is reflected off scanning mirror, focused by focusing lens (5) and sent to the mirror (6) • Mirror deflects laser beam to a slit in the removable cartridge and on to the drum (7)

  49. Step 3: Writing

  50. Step 4: Developing • Toner is placed onto the drum where the charge has been reduced

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