Download
learning objectives n.
Skip this Video
Loading SlideShow in 5 Seconds..
LEARNING OBJECTIVES PowerPoint Presentation
Download Presentation
LEARNING OBJECTIVES

LEARNING OBJECTIVES

843 Views Download Presentation
Download Presentation

LEARNING OBJECTIVES

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. LEARNING OBJECTIVES • To learn the common secondary storage devices and • their basic characteristics. • To learn the common input devices and their basic • characteristics. • To learn the common output devices and their basic • characteristics. • 4. To learn the types of computers by power and use. 22

  2. SECONDARY STORAGEDEVICESThese storage devices arealso Input/Outputdevices. 28

  3. Secondary Storage Devices • Secondary Storage • Stores large amounts of data, instructions, and information more permanently than main memory. Devices for secondary storage Magnetic tape Magnetic disks Compact Disk Read-Only CD-ROM CD-RW (Compact Disk-Read Write) Write Once Read Many - (WORM) DVD – Digital Video Disks RAID (Redundant Array of Inexpensive Disks) Flash memory Removable storage 22

  4. Hard Drives (E-IDE = PATA) • Hard drives • E-IDE = PATA • Enhanced Integrated Drive Electronics • (PATA) • Parallel Advanced Technology Attached. Very fast. • Transfer Rate (Maximum) • 133 MB/S • Capacity (Minimum/Maximum) • 10 - 750GB • Price:$19-$318 • Access Time • 8-12 ms • Maximum of 4 drives. • RPM • Revolutions Per Minute • 5400 to 7,200 • 2-16 MBCache (buffer) OLD TECHNOLOGY $19 to $318 22

  5. E-IDE (PATA) BUS Connection E-IDE cable connection from drives to Motherboard. 4 drives max. 22

  6. Hard Drives (SATA) • Hard drives • SATA • Serial Advanced Technology Attachment • Transfer Rate (Maximum) • 150MB/S TO 300MB/S • Capacity (Maximum) • 40GB to 750GB • Access Time • Price • $31 to 318 • 8-12 ms • Number of Drives Supported • One drive per port. • RPM • Revolutions Per Minute • 5400 to 7,200 • 2 MB to 16MB Cache (buffer) 750GB $318 Additional Information 22

  7. Hard Drives (SATA) Four SATA cable connections for connecting drives to Motherboard. 4 drives max. 22

  8. CABLES (SATA VS EIDE) (SATA) Device, Power (PATA) Device, Power 22

  9. ADVANTAGES (SATA VS PATA) ADVANTAGES OF SATA OVER PATA: 1. FASTER 2. SMALLER CABLES AND CONNECTORS a. Small cables aid air flow inside the computer. Keeps parts cooler, thus they last longer. 3. LESS POWER CONSUMPTION 4. LOTS OF FUTURE IMPROVEMENTS. 5. ABOUT THE SAME RETAIL PRICE AS PATA. 22

  10. USB drives (External) • USB External Hard drive • INTERFACE • USB 2.0 • STORAGE • 80 GB TO 500 GB • TRANSFER RATE • 60 MB/S • PRICE • $65 TO $251 • NEED EXTERNAL TRANSFORMER. • TYPICALLY USED TO BACK UP FILES. 22

  11. Hard Drives of the Future • Characteristics: • Company: SanDisk • Mostly for notebooks. • 32GB flash memory • 2,000,000 hours between failure • Access time: 0.12 milliseconds • Power: 0.4 to 1.0 watts • 100 times faster than any hard drive for random access. • Uses older PATA • Cost: $600 • Main advantages: Fast, low failure rate, low power requirement, non-volatile, will replace hard drives in laptops, but can be used in desktops. <<1.8 inches>>

  12. USB drives (External) • USB External Hard drive • BACKUP WITH NORTON GHOST • GHOST CAN BACKUP INDIVIDUAL FILES OR THE ENTIRE C: DRIVE IMAGE. • If your C: drive completely fails, using Ghost you can copy the complete C: drive image onto the new drive from the external drive that has the image, and go.... • Thus, in a few minutes your "back in business." 22

  13. Pocket USB drives (External) • Pocket USB Drives • STORAGE • 5 GB TO 120 GB • SIZE • ONE INCH TO 2.5 INCHES. • PRICE • $60 TO $201 • USED WHEN YOU NEED MORE STORAGE THAN A FLASH DRIVE CAN GIVE. • TRANSFER RATE • 16 MB/S TO 32 MB/S • CACHE (BUFFER) SIZES • 4 MB TO 8 MB • USE ROTATING MAGNETIC DISKS, JUST LIKE THE BIG EXTERNAL EIDE/SATA DRIVES. 22

  14. Flash USB drives (External) • FLASH DRIVE (USB) • STORAGE • 128MB TO 16GB • USES FLASH MEMORY • IS NON-VOLITLE • TRANSFER RATE • 14 MB/S TO 19 MB/S • PRICE • $15 TO $130 • ALSO CALLED • THUMB DRIVES • PENCIL DRIVES • KEYCHAIN DRIVES 22

  15. CD-ROM • CD-ROMs (Read Only Memory) • Used to store software you purchase, music, movies • Compact Disk Read Only Memory • 650 MB storage • 56X Transfer rate (Max) • (56 x 150 KBps) • 6,750-7,800 KBps transfer rate • 80-90 ms access time • $6 to $19 More Information 22

  16. CD-Recorder • CD-Recorder • Also called:a WORM • Write Once, Read Many • With a CD-ROM drive, you can only READ. • With a CD-R drive, you can WRITE once, and you can READ as many times as you want. • Uses Ablative technique: • Laser burns .83 micron pits into disk • 650 – 800 MB 22

  17. 40x /12x/48x Compact Disk ReadWrite 650 - 800 MB • CD-RW Drive • TYPICAL SPECS: 52X32X52X • 52x(Write first time) 32x(Rewrite) 52x(Read) • $28.00 to $45.00 • Speed multiplier with CDs: • x = 150 KBp 22

  18. 40x /12x/48x Compact Disk ReadWrite 650 - 800 MB • HOW IT STORES DATA: • Uses a crystalline compound • Heated then cooled: • Becomes crystalline • Reflects laser (1bit) • Heated to a higher temperature then cooled: • Becomes a amorphous • Does not reflect laser (0 bit) More Information 22

  19. DVD – Digital Video Disk • DVD SPEEDS: • DVD-R/RW (16x8x16x) • DVD-Write 16x, DVD-ReWrite 8x, DVD-Read 16x • PRICE: • $45 to $200 • Speed multiplier with DVDs: • x = 1.3 MBps 40x /12x/48x DVD Read-Write (DVD-RW) 4.7 GB 22

  20. Digital Video Drive (DVD) • DVD-ROMCD-ROM • Sides: one or two one • Layers: one or two one • Track pitch: .74 microns1.6 microns • Pit length: .40.83 microns • Near Future Storage • 17 GB 22

  21. 40x /12x/48x DVD Read-Write (DVD-RW) Smaller Pits, Narrower Track Pitch InsideOn the inside, a DVD is totally different. Its pits are half the size of CD pits (0.4µm vs. 0.83µm), and it's tracks are spaced about twice as close together (0.74µm vs. 1.6µm).   See following image... 4.7 GB 650-800 MB CD disk DVD disk 22

  22. Digital Video Drive • DVD Applications • Music • Higher sampling rate • More bits per sample • Movies • Replacement for VHS tapes • 80 cents vs $2.20 to manufacture • Software distribution • Computer system backup 22

  23. Input Devices 28

  24. Input • Data entry • The process by which human-readable data is converted into a machine-readable form. • Data input • The process of transferring machine-readable data into the computer system. • Source data automation • Capturing and editing data where the data is originally created and in a form that can be directly input to a computer. 27

  25. POINT OF SALE DEVICE (POS)MAGNETIC STRIP / BARCODE READERS 28

  26. TOUCH SCREEN 28

  27. KEYBOARD Infrared Wireless Keyboard 28

  28. MOUSE/TRACKBALL Mouse Trackball 28

  29. DRAWING TABLET Drawing Tablet 28

  30. GAME DEVICES Flight Yoke Steering Wheel Joy Stick Game Pad 28

  31. TIME CLOCK 28

  32. FINGERPRINT SCANNERS • Fingerprint Scanner • $32.00 and up • ID < 1 second • Used with smart card • Fingerprint Scanner • $32.00 and up • ID < 1 second • Used with smart card 28

  33. FINGERPRINT SCANNERS Say goodbye to password hassles. Now you can log on to your computer and your favorite websites with the touch of your finger, without having to remember all those passwords - simply place your finger on the receiver whenever a password or username is required.Easy-to-use software makes replacing passwords with your fingerprint a breeze. The Registration Wizard helps you register fingerprints for each user. When you first visit a site that requires a password, just touch the Fingerprint Reader with your registered finger, enter your data, and then click OK. When you browse back to that website, you can simply log on with your fingerprint. You can also use the Fingerprint Reader to quickly switch between Windows user accounts without closing programs and files - and each user's personal content stays personal. 28

  34. IRIS ID SCANNERS • IRIS Identification Scanner • $206.00 • Less than 3 seconds to authorize. • The human iris is absolutely unique, • even between twins or an individual's right • and left eyes. 28

  35. BIOKEYBOARD Fingerprint Smart Card • BIO-KEYBOARD • Security device • Fingerprint data and smart card data must match in • order to use computer. 28

  36. RFID (RadioFrequencyID) Transponder Reader • How RFID works: • The transponder is energized by the reader. The transponder then sends the reader information that is stored in it, such as a product ID code. 28

  37. RFID (Radio Frequency ID) Mobile-Commerce Payment Mechanism with Texas Instrument's RFID technology. 28

  38. RFID (Radio Frequency ID) Best Buy will start using RFID in January or February of 2006 28

  39. RFID (Radio Frequency ID) Corporations, government to track your every move.New book 'SPYCHIPS' sets out disturbing scenario using RFID technology TI-RFID Web Site Leading Journal on RFID 28

  40. RFID (Radio Frequency ID) Know this article © 2005 WorldNetDaily.com "Can a microscopic tag be implanted in a person's body to track his every movement? There's actual discussion about that. You will rule on that – mark my words – before your tenure is over." – Sen. Joseph Biden, to Judge John Roberts at Supreme Court confirmation hearings, Sept. 12, 2005. Imagine a world of no more privacy, where hidden radio frequency scanners will be constantly pointed at you, wirelessly reading microchips embedded in your clothing, shoes, bank cards and even your own flesh. It's the ultimate in "Big Brother," and according to the explosive new book "SPYCHIPS: How Major Corporations and Government Plan to Track your Every Move with RFID," companies including Wal-Mart, Target, Gillette, Proctor & Gamble, Kraft, IBM and even the U.S. government have all invested in making such a scenario a reality within the next decade. 28

  41. RFID (Radio Frequency ID) Welcome to the world of Radio Frequency Identification, or RFID, where tiny computer chips smaller than a grain of sand will track everyday objects – and even people – keeping tabs on everything you own and everywhere you go. While it sounds far-fetched and futuristic, it's already here and documented in "SPYCHIPS," written by Katherine Albrecht and Liz McIntyre. These two privacy advocates have uncovered extraordinarily detailed plans to use this new technology to watch U.S. citizens. Revelations in the book include IBM's blueprint for a "Person Tracking Unit" that scans the RFID tags on unwitting members of the public as they move through retail stores, airports, train stations, elevators, libraries, theaters and even public restrooms. They intend to follow your every move. 28

  42. RFID (Radio Frequency ID) Nokia is developing an RFID-reader cell phone that could be used to scan people and inventory their belongings as they walk past on the street. Bank of America has cooked up a "Crowd Identification Device" to scan RFID tags on the things people are wearing and carrying to pinpoint, identify and bombard them with targeted audio advertising messages. There is even an RFID armband that delivers a dose of paralyzing medication or an electroshock to subdue individuals. These are just a few of the patents and patent applications revealed in "SPYCHIPS" that major corporations and the U.S. government have planned. The book chronicles efforts to keep these plans a secret, revealing the contents of confidential industry documents and outlining plans to "pacify" the public, co-opt public officials and develop spin to ensure the adoption of the RFID infrastructure. 28

  43. RFID (Radio Frequency ID) The book also discusses the industry's more underhanded tactics, like a foiled plot by the Grocery Manufacturers of America to mount a smear campaign against author Katherine Albrecht. As the authors were researching the book, illegal efforts were made by unknown persons to gather intelligence on them, including siphoning telephone records and targeting bank records. Someone even contacted their friends and family to probe for information, the authors say. Hundreds of millions of dollars have already been invested in what global corporations are calling the hottest new technology since the bar code – and billions more are in the balance. Wal-Mart's top suppliers are already on board with RFID tracking, and high-level former government officials like Tommy Thompson and Tom Ridge have joined the boards of major RFID companies. In fact, Thompson, former secretary of health and human services, now sits on the board of the VeriChip human implant company and has publicly suggested RFID implants for us all. "Spychips could strip away our last shreds of privacy and usher in a nightmare world of total surveillance – to keep us all on Big Brother's very short leash," say the authors 28

  44. RFID (Radio Frequency ID) 28

  45. RFID (Radio Frequency ID) Play RFID-1 Radio Program Play RFID-2-Implant Play RFID-3-Sensor Demo Play RFID-4-Door Latch 28

  46. HP Scanner • Characteristics: • HP scanner • 1,200 dpi optical to • 999,999 dpi • interpolated • 36 bit color • USB • $59.00 to $499.00 28

  47. A PC Equipped with a Computer Camera 29

  48. DIGITAL CAMERAS • METHODS OF INPUT TO COMPUTER: • USB • Firewire 29

  49. MICR Device • MICR • Magnetic Ink Character Recognition. • Used on checks. 30

  50. Output Devices 28