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  • 1. Storage
    Jessica Vella
    Lauren Willey
  • 2. Storage
    Storage is the ability to maintain data within computing and digital technology systems
    Data can be stored temporarily or permanently
  • 3. Importance of Storage
    Ability to access information anywhere and anytime
    Easily share information with others
    Maintain huge libraries of documents, videos, music, pictures, and other digital information in a device no longer than a thumb
  • 4. Storage Device
    Hardware that stores and retrieves data
    Storage media is the material on which the data is stored
    RAM, or Random Access Memory, is considered primary storage because it is the main storage for data being processed
  • 5. RAM: What it is & Why it Matters
    Temporary memory that stores bytes of data and program instructions for the processor to access
    It is the primary storage area in a computer
    It is a crucial role in computer systems and contributes to a computer’s performance
  • 6. RAM: Key Information
    Data flows back and forth between the CPU (Central Processing Unit) and the RAM across the front side bus
    SIMM is a Single In-line Memory Module, a set of tips grouped together on a circuit board
    Also, a DIMM is a Dual In-line Memory Module
  • 7. Video Memory: What and Why
    Stores image data for a computer display in order to speed the processing and display of video and graphics images
    It provides important capabilities for today’s graphics-intensive computer systems
    Current computer games require high-capacity video memory and sophisticated graphics support to provide a realistic graphics environment
  • 8. Video Memory: Key Information
    Acts as a buffer or intermediate storage area between the microprocessor and the display
    Images are first read by the processor from RAM and then written to video memory before they are sent to the display
  • 9. ROM: What and Why
    Read-Only Memory (ROM) provides permanent storage for data and instructions that do not change
    ROM is firmware, which are programs and data from the computer manufacturer
    ROM has codes to start the computer
  • 10. ROM: Key Information
    ROM stores data using circuits with states that are fixed
    If the power is removed, data is not lost
    BIOS, the basic input/output system, stores information about hardware configuration and the boot program (instructions needed to start up a computer)
    Flash BIOS are BIOS that have been recorded on a flash memory chip instead of a ROM chip, this still stores data permanently but is able to be updated when new revisions are availalbe
  • 11. Magnetic Storage: What and Why
    Storage technology that uses the magnetic properties of iron oxide particles to store bits and bytes more permanently than RAM
    Uses magnetic properties instead of electric charges
    On a RAM, data is temporarily available only while the computer is powered on
  • 12. Magnetic Storage: Key Information
    A surface is coated with a layer of particles that are organized into addressable regions
    Two types of media use magnetic storage:
    Disks: thin steel platters, the computer can go directly to the desired piece of data by positioning the read/write head over the proper track of the revolving disk
    Tapes: used to store and back up large quantities of data, sequential access storage medium, less expensive than disk storage but slower, ideal for large amounts of data in a set order
  • 13. Optical Storage: What and Why
    Stores bits by using an optical laser to burn pits into the surface of a highly reflective disc. (pit = 0, no pit =1)
    Examples: CDs, DVDs, and Blu-ray discs
    Provides an extremely portable storage medium for quantities of data up to several gigabytes
    Ideal for storing music, movies, photos, software, and data for mobile access and sharing
  • 14. Optical Storage: Key Information
    Burning is the process of writing to an optical disc
    R-discs are recordable, RW-discs are rewritable and can be rewritten numerous times like a hard drive
    CD: compact disc read-only memory, stores up to 700MB of data, cannot be modified
    DVD: digital video disc read-only memory, stores more than 4.7GB of data, can store entire digitized motion picture unlike CD
    Blu-ray: shorter wavelength of blue lights to read and write small pits for higher capacity and high definition
  • 15. Solid-State Storage: What and Why
    Device that stores data using solid-state electronics such as transistors but does not require any moving mechanical parts
    Hard disk drives have slow data access rates, optical discs have limited storage capacity and slow to write to, but solid-state storage offers fast access times because it has no moving parts
    Increases in capacity each year, soon will be able to catch up to hard drives in capacity
  • 16. Solid-State Storage: Key Information
    Flash memory is a form of solid-state storage that updates the data it holds in large blocks, and requires no moving parts to read and write data
    Flash memory card is a small chip encased in a plastic housing that stores data permanently without the need for power, can be easily modified and reprogrammed
    Flash drive (USB drive)- small flash memory module that plugs into the USB port of a PC to provide convenient, portable, high-capacity storage
    USB is a Universal Serial Bus and allows a wide array of devices to connect to a computer through a common port
  • 17. Cloud Storage: What and Why
    Storing data files over the Internet (cloud) using Web-based services instead of one’s computer
    Allows users to take advantage of the internet for data storage
    Data can be stored on Internet servers and accessed from any Internet-connected device
    Reduces data redundancy by allowing one copy of a file to be accessed from multiple devices instead of multiple copies on the device itself
  • 18. Cloud Storage: Key Information
    People are using cloud storage everyday but are unaware of it
    Google Docs, Facebook, Youtube, and others are all examples of locations supporting cloud storage
  • 19. Benefits and Disadvantages of Cloud Storage
    Benefits:
    Ability to access the data from any Internet-connected device through a Web browser
    Ideal for sharing files with others for distribution or collaborative purposes
    Providers are addressing issues to work on improvements of cloud storage for the future
    Disadvantages:
    Cant access data without internet access
    Requires trust in the service provider
  • 20. CREDITS
    Storage: Emerge with Computer Concepts, 2010 Cengage Learning http://content.delmar.cengage.com/CPReader/View/9781111471989/default.aspx?token=D987E85C20E8426A96CC2418B81C7B7F07B2CE0D471E961D9F302476FA96EED94DE7AB346048F71BA941662A9CAC2B218B2A8A4A1E996BFF&pid=441931&eISBN=9781111471989#7d656571-96eb-4f47-8b38-1059cb17e12d