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Objectives Overview

Objectives Overview. See Page 237 for Detailed Objectives. Objectives Overview. See Page 237 for Detailed Objectives. Storage. Pages 238 - 239. Storage. Pages 238 – 239 Figure 6-1. Storage. Capacity is the number of bytes a storage medium can hold. Page 240 Figure 6-2. Storage.

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Objectives Overview

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  1. Objectives Overview See Page 237 for Detailed Objectives Discovering Computers Fundamentals, 2012 Edition Chapter 6

  2. Objectives Overview See Page 237 for Detailed Objectives Discovering Computers Fundamentals, 2012 Edition Chapter 6

  3. Storage Pages 238 - 239 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  4. Storage Pages 238 – 239 Figure 6-1 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  5. Storage • Capacity is the number of bytes a storage medium can hold Page 240 Figure 6-2 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  6. Storage • A storage deviceis the computer hardware that records and/or retrieves items to and from storage media Page 240 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  7. Storage • Access timemeasures: • The amount of time it takes a storage device to locate an item on a storage medium • The time required to deliver an item from memory to the processor Page 240 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  8. Hard Disks • A hard diskcontains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information Pages 240 - 241 Figure 6-3 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  9. Hard Disks • Hard disks can store data using longitudinal recording or perpendicular recording Page 240 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  10. Hard Disks • Characteristics of a hard disk include: Page 242 Figure 6-5 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  11. Hard Disks Page 243 Figure 6-6 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  12. Hard Disks • The hard disk arms move the read/write head, which reads items and writes items in the drive • Location often is referred to by its cylinder Page 243 Figure 6-7 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  13. Hard Disks • A head crash occurs when a read/write head touches the surface of a platter • Always keep a backup of your hard disk Page 244 Figure 6-8 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  14. Hard Disks • RAID (redundant array of independent disks) is a group of two or more integrated hard disks • A network attached storage(NAS) device is a server connected to a network with the sole purpose of providing storage Page 244 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  15. Hard Disks Pages 244 – 245 Figures 6-9 – 6-10 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  16. Hard Disks • A disk controller consists of a special-purpose chip and electronic circuits that control the transfer of data, instructions, and information from a disk to and from the system bus and other components of the computer Page 246 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  17. Flash Memory Storage • Flash memory chips are a type of solid state media and contain no moving parts • Solid state drives (SSDs) have several advantages over magnetic hard disks: Page 247 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  18. Flash Memory Storage Page 247 Figure 6-12 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  19. Flash Memory Storage • A memory cardis a removable flash memory device that you insert and remove from a slot in a computer, mobile device, or card reader/writer Page 248 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  20. Flash Memory Storage Pages 248 - 249 Figures 6-13 – 6-14 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  21. Flash Memory Storage • USB flash drivesplug into a USB port on a computer or mobile device Page 250 Figure 6-15 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  22. Video: Thumb Drive (USB Flash Drive) Encryption CLICK TO START Discovering Computers Fundamentals, 2012 Edition Chapter 6

  23. Flash Memory Storage • An ExpressCard moduleis a removable device that fits in an ExpressCard slot • Commonly used in notebook computers Page 250 Figure 6-16 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  24. Cloud Storage • Cloud storageis an Internet service that provides storage to computer users Page 251 Figure 6-17 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  25. Cloud Storage Page 251 Figure 6-18 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  26. Cloud Storage • Users subscribe to cloud storage for a variety of reasons: Page 252 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  27. Optical Discs • An optical disc consists of a flat, round, portable disc made of metal, plastic, and lacquer that is written and read by a laser • Typically store software, data, digital photos, movies, and music • Read only vs. rewritable Pages 252 - 253 Figure 6-19 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  28. Optical Discs • Care of optical discs Page 253 Figure 6-20 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  29. Optical Discs Pages 253 - 255 Figure 6-21 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  30. Optical Discs Page 255 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  31. Optical Discs Page 255 Figure 6-23 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  32. Optical Discs Pages 253 and 256 Figure 6-21 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  33. Other Types of Storage Page 256 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  34. Other Types of Storage • Tape is a magnetically coated ribbon of plastic capable of storing large amounts of data and information • A tape drivereads and writes data and information on a tape Page 257 Figure 6-26 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  35. Other Types of Storage • A magnetic stripe cardcontains a magnetic stripe that stores information • A smart cardstores data on a thin microprocessor embedded in the card Page 257 Figure 6-27 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  36. Other Types of Storage • Microfilm and microfiche store microscopic images of documents on a roll or sheet film Page 258 Figure 6-28 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  37. Other Types of Storage Page 258 Figure 6-29 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  38. Other Types of Storage • Enterprise storage stores huge volumes of data and information for large businesses • Uses special hardware for heavy use, maximum availability, and maximum efficiency Pages 258 - 259 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  39. Putting It All Together Page 259 Figure 6-30 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  40. Putting It All Together Page 259 Figure 6-30 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  41. Summary Page 260 Discovering Computers Fundamentals, 2012 Edition Chapter 6

  42. Chapter 6 Complete

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