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Chapter 6

Chapter 6. Supporting I/O and Storage Devices. Objectives. Learn about the general approaches you need to take when installing and supporting I/O and mass storage devices

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Chapter 6

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  1. Chapter 6 Supporting I/O and Storage Devices

  2. Objectives • Learn about the general approaches you need to take when installing and supporting I/O and mass storage devices • Learn how to install and configure several I/O devices, such as barcode readers, biometric devices, digital cameras, webcams, graphic tablets, and touch screens • Learn how to install and configure adapter cards

  3. Objectives • Learn about supporting the video subsystem, including selecting a monitor and video card and supporting dual monitors and video memory • Learn how to support optical drives and flash memory devices

  4. Basic Principles For Supporting Devices • I/O devices may be internal or external (peripheral device) • Every device is controlled by software • device drivers • device drivers must be written for the OS you are using • simple devices, such as the keyboard and mouse, are controlled by the system BIOS and do not require device drivers • Windows has embedded device drivers for many devices • Safe mode

  5. Basic Principles For Supporting Devices • Best guide for installation and support the manufacturer of the device. • Some devices need application software • Best example of this is a scanner. • A device is no faster than the port/slot it is designed for • USB3 device used on a PC with only USB 2 support • Use an administrator account in Windows when installing devices • UAC (User Account Control)

  6. Basic Principles For Supporting Devices • Problems are sometimes solved by updating drivers or firmware • Install only one device at a time

  7. Installing a New Device • When you attach a new device to the system unit you will see a message pop up near the Action Center icon. • If you click on Click here for status the following dialog box opens

  8. Installing a New Device • However if the driver software installation fails the status dialog box will open showing which driver was not installed

  9. Installing a New Device • The actions center will open and give you options for correcting the driver problem.

  10. Using Device Manager • Device Manager (devmgmt.msc) • Primary Windows tool for managing hardware • Using Device Manager you can: • Disable or enable a device • Update its drivers • Uninstall a device • Undo a driver update • To access Device Manger: • Click Start, right-click Computer, select Properties on the shortcut menu, Click Device Manager on the System window and respond to UAC box

  11. A+ Guide to Hardware, Sixth Edition Using Device Manager • Ways to use Device Manager to solve problems: • Look for error messages offered by Device Manager • Update the drivers or roll back (undo) a driver update • Try uninstalling and reinstalling the device • If Windows is not able to locate new drivers for a device • Download latest driver file from manufacturer’s site • Use 64-bit drivers for 64-bit OS and 32-bit drivers for 32-bit OS • A few devices have firmware on the device that can be flashed

  12. Using Device Manager • To access Device Manager: • Click Start • right-click Computer • select Properties on the shortcut menu • Click Device Manager on the System window • If prompted respond to UAC box • Or type Devmgmt.msc in the Search box and press enter. • Either method will open the Device Manager. • Device Manager is also part of the computer management console.

  13. The Device Manager Window Double click on the specific device to open Properties dialog box.

  14. The Device Manager Window Additional Properties that can be viewed

  15. A+ Guide to Hardware, Sixth Edition • Data transmission speeds for various port types and wireless connections found on page 244 in book. • Converting meters to feet 2 meters = 6ft 6in 2 meters = 3 meters = 3 meters = 9ft 10in 100 meters = 100 meters = 328 ft

  16. A+ Guide to Hardware, Sixth Edition USB Connections • The USB Implementers Forum, Inc. uses the following symbols • SuperSpeed, Hi-Speed, and Original USB logos appear on products certified by the USB forum • USB forum is found at www.usb.org

  17. A+ Guide to Hardware, Sixth Edition USB Connections • As many as 127 USB devices can be daisy chained together • USB uses serial transmissions and devices are hot-swappable (plug and unplug without powering down) • A USB cable has four wires, two for power and two for communication

  18. A+ Guide to Hardware, Sixth Edition USB Cables • A-Male to A-male • A-Male to A-Female • A-Male to B-Male • Mini-B to A-Male • A-Male to Micro-A

  19. A+ Guide to Hardware, Sixth Edition USB Cables • USB 3.0 A-Male to USB 3.0 B-Male • USB 3.0 A-Male to USB 3.0 Micro-B cable

  20. A+ Guide to Hardware, Sixth Edition FireWire (IEEE 1394) Connections • Hardly used in new devices • Uses serial transmissions and devices are hot-swappable • FireWire 800 allows for up to 63 devices and FireWire 400 allows for up to 16 devices to be daisy chained together

  21. A+ Guide to Hardware, Sixth Edition FireWire (IEEE 1394) Connections • FireWire 400 • Firewire 400 mini • FireWire 800 uses a 9-pin rectangular connector

  22. A+ Guide to Hardware, Sixth Edition Speed Comparison USB vsFirewire • USB 1.1 = 12 Mbit/s • Firewire400 = 400 Mbit/s • USB 2.0 = 480 Mbit/s • FireWire 800 = 800 Mbit/s • USB 3.0 = 5 Gbit/s • eSATA = Up to 6 Gbit/s right now it depend on the internal SATA chip. • Speed is also dependent on the quality of the hardware.

  23. A+ Guide to Hardware, Sixth Edition Infrared (IR) Connections • Outdated wireless technology mostly replaced by Bluetooth • Uses USB port and IR transceiver to receive signals • Most common use of IR is by remote controls

  24. A+ Guide to Hardware, Sixth Edition Installing I/O Peripheral Devices • Simple input devices (mouse and keyboard) • Can be controlled by the BIOS or have embedded drivers built into the OS • Plug into a USB or older PS/2 port and OS should automatically recognize it and install generic drivers • For keyboards with special features: • Install drivers that came with the keyboard

  25. A+ Guide to Hardware, Sixth Edition Installing I/O Peripheral Devices • General procedures to install any peripheral device: • 1. Read the manufacturer’s directions • 2. Make sure the drivers are written for the proper OS • 3. Make sure the motherboard port you are using is enabled • 4. Install drivers or plug in the device • 5. Install the application software to use the device • Use Device Manager to uninstall, disable, or enable most devices • USB devices are managed through Control Panel

  26. A+ Guide to Hardware, Sixth Edition Barcode Readers • Scans barcodes on products • Used to maintain inventory or at point of sale (POS) • Several interface methods • Wireless connection, serial port, USB port, keyboard port

  27. A+ Guide to Hardware, Sixth Edition Types of Bar Codes

  28. A+ Guide to Hardware, Sixth Edition Bar Codes Readers

  29. A+ Guide to Hardware, Sixth Edition Biometric Devices • Biometric Devices - inputs a person’s biological data • Additional authentication to control access to sensitive data • Fingerprint reader types may: • Look like a mouse • Use wireless or USB connection • Be embedded on side of keyboard, flash drive, laptop and now smart phones. • Read documentation to know if you should install drivers before plugging in device

  30. A+ Guide to Hardware, Sixth Edition Biometric Devices • Other types of biometric devices • DNA Matching • Ear • Eyes - Iris Recognition • Eyes - Retina Recognition • Face Recognition • Fingerprint Recognition • Finger Geometry Recognition • Gait • Hand Geometry Recognition • Odor • Signature Recognition • Typing Recognition • Vein Recognition • Voice / Speaker Recognition

  31. Digital Cameras and Camcorders • Two ways to transfer images to PC • Connect camera to the PC using a cable • Install the memory card in the PC

  32. Webcams • Embedded on most laptops • Can be installed using a USB port or other port on PC desktops • Comes with built-in microphone

  33. A+ Guide to Hardware, Sixth Edition Graphics Tablets • Also called digitizing tablet • Likely to connect by a USB port • Comes with stylus that works like a pencil • Install the same way as other USB devices

  34. A+ Guide to Hardware, Sixth Edition MIDI Devices • MIDI (Musical instrument digital interface) – set of standards used to represent music in digital form • MIDI standards are used to connect musical equipment such as musical keyboards and mixers, these also can be connected to computers. • Also can connect musical instruments to computers using software for MIDI conversion. • Most sound cards can play MIDI files

  35. A+ Guide to Hardware, Sixth Edition MIDI Devices • MIDI port is a 5-pin DIN port that looks like PS/2 keyboard port (only larger) • Way to connect a musical instrument to PC • MIDI to MIDI, MIDI to USB, USB to USB, and USB to MIDI

  36. A+ Guide to Hardware, Sixth Edition Touch Screens • Input device that uses a monitor or LCD panel as the backdrop for input options • Some laptops and monitors for desktops have built-in touch screens • Can be installed as an add-on • For most installations, install drivers before connecting by way of a USB port • Use management software that came with the device to control and calibrate • Windows 7 and 8 has native support software for touch screens.

  37. A+ Guide to Hardware, Sixth Edition Touch Screens

  38. A+ Guide to Hardware, Sixth Edition KVM Switches • Keyboard, Video, and Mouse (KVM) switch allows the use of one keyboard, mouse, and monitor for multiple computers • Useful in a server room or testing lab • Does not require device drivers, just plug in cables form each computer to the device • Switch between computers by using a hot key on the keyboard, buttons on KVM switch, or a wired remote

  39. Installing and Configuring Adapter Cards • When preparing to install a adapter card: • Verify card fits an empty expansion slot • Verify device drivers for the OS are available • Back up important data not already backed up • Create a restore point. • Know your starting point

  40. Installing and Configuring Adapter Cards • General directions to install an video adapter card are found starting on page 261 in the book. • On page 265 are issues you may run into when you install a video card. • Other adapter cards follow the same basic procedure.

  41. A+ Guide to Hardware, Sixth Edition Types of Adapter Cards • The following list of cards is condensed from the Web site CompTIA A+ Exam Prep: Adapter Cards and Their Functions.

  42. A+ Guide to Hardware, Sixth Edition Types of Adapter Cards • Video Card • Multimedia cards • Sound • TV Tuner • Video Capture • I/O cards • USB • SCSI • Parallel • Communications • NIC • Modem

  43. A+ Guide to Hardware, Sixth Edition Supporting the Video Subsystem • Monitor: primary output device of a computer • Two necessary components for video output: • Monitor • Video card (also called video adapter or graphics card) or video port on motherboard

  44. Types of Monitors • CRT (cathode-ray tube) – first used in television sets • Largely obsolete

  45. Types of Monitors • LCD (liquid crystal display) - also called flat panel • First used in laptops • How it works

  46. Types of Monitors • Back light in LCD monitors • CCFLD (Cold Cathode Fluorescent Lamp)

  47. Types of Monitors • LED (light-emitting diode) backlighting is used to light the LCD panel

  48. Types of Monitors

  49. Types of Monitors • Types of monitors (cont’d) • Plasma monitor – provides high contrast with better color than LCD monitors • Expensive and heavy

  50. Types of Monitors • Projector – used to shine a light that projects a transparent image onto a large screen

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