1. Information Technology INT1001 Lecture 4 Storage & Multimedia 1

2. Computers Are Your Future Tenth Edition Chapter 7: Input/Output & Storage Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall2

3. Storage Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall3

4. Storage: Holding Data for Future Use Storage is the process of saving software and data. Storage is also called mass storage or auxiliary storage. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall4

5. Storage: Holding Data for Future Use Storage is dependent on two parts: A storage device, which has the ability to save data even when the user turns the power off Storage media that run on storage devices: Hard disks Floppy disks Flash memory CDs and DVDs Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall5

6. Storage: Holding Data for Future Use Reasons that demand for storage capacity is continually increasing: Storage devices hold onto data even if the computer’s power is turned off, whereas all data stored in RAM will be lost. Storage devices are less expensive than RAM/memory. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall6

7. Storage: Holding Data for Future Use Reasons that demand for storage capacity is continually increasing (continued): Storage devices are required during the computer system’s start-up operations. Storage devices are also used as an output device for saving data. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall7

8. Storage: Holding Data for Future Use A hard disk drive (hard disk) High capacity High speed Considered secondary storage (online or fixed storage), compared with RAM, which is categorized as primary storage. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall8

9. Storage: Holding Data for Future Use Hard disk drives Are random access storage devices and permit direct retrieval of desired data Contain a coating of magnetic material used for data storage. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall9

10. Storage: Holding Data for Future Use A portion of a hard disk set aside as if it were a physically separate disk is a partition. Partitions are often used to house different operating systems. Having partitions for different operating systems allows users to interact with programs developed in either system. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall10

11. Storage: Holding Data for Future Use Network attached storage (NAS) is a form of storage that permits retrieval or storage of data by any computer connected to the network. Remote storage (Internet hard drive) is storage on a server that is available through the Internet. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall11

12. Storage: Holding Data for Future Use Disk cache A type of RAM CPU looks in disk cache first Can speed up data retrieval Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall12

13. Storage: Holding Data for Future Use Flash drive Solid-state drive or SSD A storage device that has no moving parts and uses solid-state circuitry Flash memory Electronic memory Nonvolatile Stores data in blocks on a chip Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall13

14. Storage: Holding Data for Future Use USB flash drive Known as Memory stick Thumb drive Jump drive Is a popular portable or removable storage device Replaced legacy technology of floppy disks and Zip disks Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall14

15. Storage: Holding Data for Future Use CD-ROM or DVD-ROM (compact or digital video disc read-only memory) Data can be read but not altered. CD drive and DVD drive Optical storage devices Use laser beams to store data through: Pits, the indentations, a binary 0 Lands, the flat reflective areas, a binary 1 Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall15

16. Storage: Holding Data for Future Use Additional types of optical storage include: CD-R (compact disc- recordable) CD-RW (compact disc-rewritable) DVD+R (digital video recordable; plus) DVD-R (digital video recordable; dash) DVD+RW (digital video rewritable; plus) DVD-RW (digital video rewritable; dash) BD-ROM (Blu-ray Disc read only) BD-R (Blu-ray Disc recordable) BD-RE (Blu-ray Disc rewritable) Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall16

17. Storage: Holding Data for Future Use Protecting your discs Do not expose discs to excessive heat or sunlight. Do not touch the underside of the disc. Hold the edges. Do not write on the label side of the disc with a hard implement. Do not stack discs. Store discs in cases when not in use. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall17

18. Storage: Holding Data for Future Use Solid-state storage devices Have no moving parts Are nonvolatile ExpressCard A notebook accessory the size of a credit card Can be used as a modem, extra memory, or a network adapter Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall18

19. Storage: Holding Data for Future Use Flash memory cards Another type of solid-state storage device Used with MP3 players and smartphones Smart card/chip card/integrated circuit card (ICC) Able to store and process information Combines flash memory with a small microprocessor. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall19

20. Storage: Holding Data for Future Use Holographic storage May make high-density storage possible Able to create three-dimensional images Eye-Fi wireless memory card Combines standard flash memory card features with wireless circuitry Enables direct wireless network connection to devices such as digital cameras. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall20

21. Multimedia Devices Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall21

22. Audio: MP3 Players and Voice Recorders Multimedia includes items that stimulate more than one sense, typically sight, sound, and touch. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall22

23. Audio: MP3 Players and Voice Recorders MP3 files: Are normally used for music Use a compressed audio format that does not noticeably reduce the quality of the sound Can be recorded, stored, and played on a computer, copied legally from CDs that the user paid for, or purchased from the Web Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall23

24. Audio: MP3 Players and Voice Recorders Using MP3 files on a portable player gives users the ability to take their music with them anywhere. Most MP3 players have solid-state memory and are small for portability. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall24

25. Audio: MP3 Players and Voice Recorders Digital voice recorders retrieve sounds and store them on a memory chip. Later, the sounds can be used or downloaded to a computer. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall25

26. Visual: E-Books, Digital Cameras, and Camcorders E-books are books that are digitized and supplied through some form of digital storage. E-book readers: Display e-books May be dedicated devices for reading e- books or part of other computer devices such as PDAs Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall26

27. Visual: E-Books, Digital Cameras, and Camcorders Digital cameras: Store and display images using digital technology Do not need film Pictures taken on a digital camera are usually moved to a computer for: permanent storage printing Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall27

28. Visual: E-Books, Digital Cameras, and Camcorders The most popular methods for storing pictures in a digital camera are: CompactFlash SmartMedia Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall28

29. Visual: E-Books, Digital Cameras, and Camcorders Photo-editing programs: Used after photos are transferred from a digital camera to a computer Allow photos to be edited and printed Photo printer: Designed exclusively to print photos directly from cameras Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall29

30. Visual: E-Books, Digital Cameras, and Camcorders Full-motion images, such as animations, videos, and movies, are being strongly influenced by digital videos. Because of their size, digital video files must be compressed. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall30

31. Visual: E-Books, Digital Cameras, and Camcorders Digital video cameras have replaced the use of analog technology with digital technology. These increasingly popular cameras are small and powerful. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall31

32. Communication and Entertainment Devices Multimedia devices with phones The Apple iPhone 3G includes: Widescreen iPod Internet device with HTML e-mail Web browser The Samsung Instinct includes: Audio and video player Internet device with e-mail Web browser Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall32

33. Communication and Entertainment Devices Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall33

34. Communication and Entertainment Devices Digital video recorders (DVRs): Store videos on a hard disk unlike VCRs, which store videos on tape Function similarly to a VCR for recording purposes Can record television shows through a DVR-management service, such as TiVo ® Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall34

35. Communication and Entertainment Devices Computer game consoles Sony's PlayStation Nintendo's Wii Microsoft's Xbox Users can play interactive games using these consoles with a TV or monitor as a display. Users can play games on portable consoles. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall35

36. Communication and Entertainment Devices A headset is an extreme multimedia device the user wears that creates the illusion of being in a 3D environment. Cave Automated Virtual Environment (CAVE) uses 3D glasses instead of a headset. Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall36

37. What You’ve Learned Storage is slower than memory, has greater capacity, and retains data when the power is off. 37Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

38. What You’ve Learned Storage media can be categorized in many ways: read only or read/write; random access; magnetic, flash, or optical; and secondary, external, or portable. 38Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall

39. What You’ve Learned There are a variety of CD and DVD formats for reading and writing data. Solid-state storage media have no moving parts and are lightweight and durable. 39Copyright © 2009 Pearson Education, Inc. Publishing as Prentice Hall