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    Storage ppt lauren&jesss.pptx Storage ppt lauren&jesss.pptx Presentation Transcript

    • Storage
      Jessica Vella
      Lauren Willey
    • Storage
      Storage is the ability to maintain data within computing and digital technology systems
      Data can be stored temporarily or permanently
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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