1 / 32

Any Questions?

Any Questions?. Chapter 9-Installing and Supporting I/O devices. General Approaches to take when installing I/O About Keyboards How to work with the mouse and pointing devices Monitors and video cards and how they relate How to use ports and expansion for add-on devices

moral
Télécharger la présentation

Any Questions?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Any Questions?

  2. Chapter 9-Installing and Supporting I/O devices • General Approaches to take when installing I/O • About Keyboards • How to work with the mouse and pointing devices • Monitors and video cards and how they relate • How to use ports and expansion for add-on devices • Troubleshooting I/O devices, including keyboards, pointing devices and video Pg 341

  3. Basic Principles for I/O • Internal or external devices • I/O devices are controlled by software • Manufacturers instructions take precedence • Some devices need application software • Some problems can be solved by updateing drivers • I/O devices are a moving target Pg 342

  4. Basic Principles for I/O • Internal or external devices • I/O devices are controlled by software • Manufacturers instructions take precedence • Some devices need application software • Some problems can be solved by updateing drivers • I/O devices are a moving target Pg 342

  5. Keyboards • Straight or Ergo • Repetitive Stress Injury • Carpal Tunnel Syndrome (CTS) • Foil or Metal contact • When key is pressed contact is made • Connections • 5 pin DIN • 6 pin PS/2 • USB • Generally no drivers (unless wireless) Pg 344

  6. Mouse and pointers • Mouse • Scroll wheel • Keyboard stick • Mouse ball drives x and y axis rollers • Buttons can be customized Pg 346

  7. Touch Screens & Trackpads • Touchscreen • Uses monitor or LCD panel as background • Built in to regular monitor • Or added on • Must keep calibrated • Trackpad/Touchpad • Finger pad-like laptop • Trackball • Upsidedown mouse-move ball with your finger Pg 349

  8. Match Them!

  9. Touch Screens & Trackpads • Touchscreen • Uses monitor or LCD panel as background • Built in to regular monitor • Or added on • Must keep calibrated • Trackpad/Touchpad • Finger pad-like laptop • Trackball • Upsidedown mouse-move ball with your finger Pg 349

  10. Specialty • Barcode Reader • Pen wand • Slot Scanner • CCD(Scan Gun) • Image scanner • Laser scanner • USB, Wireless, Serial connection • Converts code to numbers Pg 350

  11. Specialty • Biometric Reader • Fingerprint • Retina • Handprint • Voice • Etc • Disadvantages • False readings • Advantage • Convenient Pg 350

  12. Monitors, Projectors, Video Cards • CRT Monitor • Filament at back of tube fires electrons at screen on front • By altering color and brightness, it “paints” the screen • When the beam hits the screen, it phosphoresces-lights up Pg 354

  13. Monitors, Projectors, Video Cards • LCD Monitor • LCD also known as flat panel • Layers of glass, electrodes and liquid crystals that are easily polarized • Electrodes make the crystals turn to let through the light • Scan across in a similar way to CRT • http://electronics.howstuffworks.com/lcd2.htm Pg 354

  14. Monitors, Projectors, Video Cards • LCD Monitor • LCD also known as flat panel • Layers of glass, electrodes and liquid crystals that are easily polarized • Electrodes make the crystals turn to let through the light • Scan across in a similar way to CRT • http://electronics.howstuffworks.com/lcd2.htm • Most screens now Actice Matrix or TFT • Older were passive matrix or DSTN Pg 354

  15. Choosing CRT or LCD • CRTs are better in some categories • LCDs are lighter, smalled and more responsive • Also much more popular now • And more expensive Pg 358

  16. Choosing CRT or LCD • CRTs are better in some categories • LCDs are lighter, smalled and more responsive • Also much more popular now • And more expensive Pg 358

  17. Choosing CRT or LCD • Contrast Ratio • Contrast between true black and true white • Higher is better • Native Resolution • Number of spots or pixels on the screen • More give finer images Pg 358

  18. Video Standards and Resolutions Pg 358

  19. Projector • Good for presentations or large audience • Costs have come down • Use an S-Video or 15 pin video • Newer ones may have more • Need either the extra 15 pin port or a dual head cable for projector • Laptops usually come with video port Pg 362

  20. Video Cards • Interface between monitor and computer • Graphics card, video adapter, video board, display card, etc • Sometimes integrated • Often separate on higher end machines • RGB/VGA • DVI • Composite Video • S Video • HDMI Pg 363

  21. Video Buses • VESA • Specifically for video • PCI • AGP • Specifically for video • PCI Express x16 • Is starting to replace AGP, not usually on same MB Pg 365

  22. AGP Standards • Releases • 1.0,2.0, 3.0 • Slot length • Speed • 1x, 2x, 4x, 8x • Voltages • Slot types • See table Pg 365

  23. PCI Express and graphic accelerators • Newest standard x16 • Twice as fast as AGP • Newest cards have their own specialized CPU • Higher heat Pg 368

  24. Video Memory • Older systems didn’t need memory • Now, much more is expected of the systems • Video memory depends on • Resolution in pixels • Number of colors-Color Depth • Color Enhancement-Alpha blending • Frame buffer is memory that holds this info before sending to monitor Pg 369

  25. Video Memory • Better cards hold multiple frames in the buffer at once • Memory types • Video RAM • SGRAM • WRAM • MDRAM • 3-D RAM • DRDRAM • GDDR Pg 369

  26. Installing Video cards • Read docs • Check Motherboard • Open Case • Ground yourself • Install Card • Load or get best drivers • Set features Pg 370

  27. Using ports for Add-Ons • Recognize ports • Serial used for ???? • Infrared • Parallel • USB • 1.1 had 1.5 or 12 Mbps • 2.0 up to 480 Mbps • Daisy Chain devices Pg 373

  28. Troubleshooting I/O • Check the installation • See if anything has changed • Try to isolate problem • Check simple things • Power • Connection • Check device manager • Exchange for a working one or install in a working system • Document changes Pg 98

  29. Troubleshooting Keyboards • Some Keys don’t work • Keyboard doesn't work at all • Key Repeats • Wrong character • Spills Pg 399

  30. Troubleshooting Touch Screen • Check connection and Device Manager • Look for scratches • Check for gaps/crumbs • Recalibrate • Uninstall and Reinstall Pg 400

  31. Troubleshooting Mouse or touchpad • Check connection • Look for dirt • Verify Settings • Try new mouse Pg 400

  32. Troubleshooting Monitors & Video Cards • Check plugs • Check power • Check for fuse • Check input switch • LED on, no picture • Power On, Wrong Characters • Monitor Flickers/Wavy Lines • Power settings • Color display • Picture focus • Sound Pg 400

More Related