Storage ppt lauren&jesss.pptx


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Storage ppt lauren&jesss.pptx

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