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CSCE101 – Op Codes (continued), 4.4, 4.5, 5.2

CSCE101 – Op Codes (continued), 4.4, 4.5, 5.2. Tuesday, October 31, 2006 and Thursday, November 2, 2006. Secondary Storage. Floppy disks and zip disks Hard disks How it works Head crash Controllers RAID (Redundant array of independent disks) CDs and DVDs How they work DVD Zones.

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CSCE101 – Op Codes (continued), 4.4, 4.5, 5.2

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  1. CSCE101 – Op Codes (continued), 4.4, 4.5, 5.2 Tuesday, October 31, 2006 and Thursday, November 2, 2006

  2. Secondary Storage • Floppy disks and zip disks • Hard disks • How it works • Head crash • Controllers • RAID (Redundant array of independent disks) • CDs and DVDs • How they work • DVD Zones

  3. Secondary Storage (continued) • Magnetic Tape • Cards • Magnetic Strip • Smart Cards • Optical Cards • Flash Memory • Non-volatile • Cards, sticks, drives

  4. Future Developments in Processing • Selling processing power • Nanotechnology - molecules • Optical computing – or opto-electronic • DNA computing – DNA strands store information using CTGA • Quantum computing – atoms

  5. Future Developments in Storage • Higher-density disks – perpendicular recording • Polymer memory – probe storage (200 gigabits per square inch)

  6. 5.2 –Input Hardware • Keyboards • Wired or wireless (RF or IR) • Virtual • Specialty • Mouse • Mechanical • Optical • Specialty

  7. Input Hardware (continued) • Touch screens • Pen input • Pen input for handwriting • Light pens • Digitizer with digitizing tablet • Scanners • Like photocopiers • Dots and bitmaps

  8. Input Hardware (continued) • Scanners (continued) • Color depth or bit depth (48-bit color depth is considered high quality.) • Resolution is measured in dots per inch (dpi) • Dpi can be 300 X 200 up to 2400 X 2400 • Bar-Code readers • 1D, 2D, 3D • Mark and character recognition • MICR, OMR, OCR

  9. Input Hardware (continued) • Fax machines • Dedicated or circuit board • Bar-Code readers • 1D, 2D, 3D • Mark and character recognition • MICR, OMR, OCR

  10. Input Hardware (continued) • Audio input devices • Sound board or MIDI board • Microphone • Speech recognition software • For computer control • To translate spoken word into text

  11. Input Hardware (continued) • Video input • Video cameras • Videoconferencing • Frame-grabber video card or full-motion video card • Software • Video Camera • Digital cameras • Photosites on a light-sensitive processor chip capture images • Light->electrons->bits

  12. Input Hardware (continued) • Video input (continued) • Digital cameras (continued) • Can be connected to the computer using a USB or Firewire connection • Or disk is inserted into computer drive • Sensors – everywhere and used to monitor environment • RFID tags – cattle, pets, library books • Biometric input devices – hand scanners, fingerprint scanner, retinal scanners

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