1. To learn the common secondary storage devices and their basic characteristics.
2. To learn the common input devices and their basiccharacteristics.
3. To learn the common output devices and their basiccharacteristics.
4. To learn the types of computers by power and use.
LEARNING OBJECTIVES
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SECONDARY STORAGEDEVICES
These storage devices arealso Input/Output
devices.
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Secondary Storage Devices
• Secondary Storage Stores large amounts of data, instructions,
and information more permanently than main memory.
Devices for secondary storageMagnetic tapeMagnetic disksCompact Disk Read-Only CD-ROMCD-RW (Compact Disk-Read Write) Write Once Read Many - (WORM)DVD – Digital Video DisksRAID (Redundant Array of Inexpensive Disks)
Flash memoryRemovable storage
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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 MB Cache (buffer)
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$19 to $318
OLD TECHNOLOGY
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E-IDE (PATA) BUS Connection
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E-IDE cable connection fromdrives to Motherboard.
4 drivesmax.
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)22Additional Information
750GB
$318
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Hard Drives (SATA)
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Four SATA cable connections for connecting drives to Motherboard.
4 drivesmax.
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CABLES (SATA VS EIDE)
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(SATA) Device, Power (PATA) Device, Power
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ADVANTAGES (SATA VS PATA)
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ADVANTAGES OF SATA OVER PATA:1. FASTER2. SMALLER CABLES AND CONNECTORS
a. Small cables aid air flow inside the computer. Keeps parts cooler, thus they last longer.
3. LESS POWER CONSUMPTION4. LOTS OF FUTURE IMPROVEMENTS.5. ABOUT THE SAME RETAIL PRICE AS
PATA.
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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.
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>>
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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."
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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.
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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
CD-ROMCD-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
22More Information
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
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Compact Disk ReadWrite
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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
650 - 800 MB
Compact Disk ReadWrite
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650 - 800 MBHOW 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
DVD Read-Write (DVD-RW)
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4.7 GB
DVD – Digital Video DiskDVD 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
Digital Video Drive (DVD)
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DVD-ROM CD-ROM•Sides: one or two one•Layers: one or two one•Track pitch: .74 microns 1.6 microns•Pit length: .40 .83 microns
Near Future Storage•17 GB
DVD Read-Write (DVD-RW)
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4.7 GB
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...
CD disk DVD disk650-800 MB
Digital Video Drive
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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
Input Devices
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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.
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POINT OF SALE DEVICE (POS)
MAGNETIC STRIP / BARCODE READERS
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TOUCH SCREEN
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KEYBOARD
Infrared Wireless Keyboard
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MOUSE/TRACKBALL
Mouse Trackball
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DRAWING TABLET
Drawing Tablet
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GAME DEVICES
Steering Wheel Flight Yoke
Joy Stick Game Pad
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TIME CLOCK
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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
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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.
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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.
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BIOKEYBOARD
Fingerprint
Smart Card
BIO-KEYBOARD•Security device•Fingerprint data and smart card data must match in order to use computer.
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RFID (Radio Frequency ID)
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.
Transponder
Reader
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RFID (Radio Frequency ID)
Mobile-Commerce Payment Mechanism with Texas Instrument's RFID technology.
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RFID (Radio Frequency ID)
Best Buy will start using RFID in January or February of 2006
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RFID (Radio Frequency ID)
Corporations, government to track your every move.New book 'SPYCHIPS' sets out disturbing scenario using RFID technology
Leading Journal on RFID
TI-RFID Web Site
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RFID (Radio Frequency ID)
© 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.
Know this article
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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.
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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.
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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
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RFID (Radio Frequency ID)
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RFID (Radio Frequency ID)
Play RFID-1 Radio ProgramPlay RFID-2-ImplantPlay RFID-3-Sensor DemoPlay RFID-4-Door Latch
HP Scanner
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Characteristics:•HP scanner•1,200 dpi optical to•999,999 dpi interpolated•36 bit color•USB•$59.00 to $499.00
A PC Equipped with a Computer Camera
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DIGITAL CAMERAS
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METHODS OF INPUT TO COMPUTER:•USB•Firewire
MICR Device
MICR•Magnetic Ink Character Recognition.•Used on checks.
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Output Devices
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Cathode Ray Tube Monitor
31Monitors of the Past & Present
Cathode Ray Tube -- CRT
Liquid Crystal Display (LCD) Monitor
31Monitors of the Present & Future
Samsung 912T• 19 Inch LCD• 700-1 contrast ratio (truer colors)• 250 cd/m2 (picture brightness)
•cd=Standard unit of luminance is candela per square meter (cd/m2).•candela= one candles luminance on an area of 1 square meter.
•1280 x 1024 pixels (resolution)•180 degree viewing area•Scanning frequency
•Horizontal 30-81 kHz•Vertical 56-75 kHz
• Built-in power; no need for wall-wart.• $199 to $419
More Info
COMPUTER PROJECTOR
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COMPUTER PROJECTORS•3 - 8 Pounds• $ 850-$3,500
Laser Printer
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Typical Characteristics:• 600 to 1,200 dpi (dots per inch)• 6 to 30 ppm (pages per minute)• $89 to $399• FAR CHEAPER TO OPERATE
THAN INKJETS.
InkJet Printer
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• Ink is infused with electrically charged particles.• Ink is heated, ink bubbles form, cool and collapse, shooting ink droplets out the nozzle toward the paper.• The spray is deflected horizontally and vertically by electrically charged deflection plates.
InkJet Printer
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Canon Pixma iP4200
•600 by 600 dots/inch (black&white)•9,600 by 2,400 dots/inch (color)•$79.00-$130•Color speed: 20 pages/min•USB 2.0
MISCELLANEOUSITEMS
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Types of Computer Systems
Personal Computers (PCs)Small, inexpensive, often called microcomputers.
Network ComputersUsed for accessing networks, especially the Internet.
WorkstationsFit between high-end microcomputers and low-end midrange.
Midrange Computers Size of a three drawer file cabinet and accommodates several users at one time.
Mainframe Computers Large and powerful, shared by hundreds concurrently.
Supercomputers Most powerful with fastest processing speeds. 33
Multimedia Computer System
Characteristics of Multimedia Computer:•Sound•Graphics•Text•Video•Even TV
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POWER BACKUP
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Power backup system•Used in case of power failure.•Pictured item runs for 16 minutes•$79 to $269.00
THE END
Test, Next class.
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