TAILIEUCHUNG - Discovering Computers - Chapter 7: Storage

Discovering Computers - Chapter 7: Storage Differentiate between storage devices and storage media; Describe the characteristics of magnetic disks; Differentiate between floppy disks and Zip disks; Describe the characteristics of a hard disk. | Chapter 7 Storage Chapter 7 Objectives Differentiate between storage devices and storage media Describe the characteristics of magnetic disks Differentiate among CD-ROMs, recordable CDs, rewritable CDs, DVD-ROMs, recordable DVDs, and rewritable DVDs Differentiate between floppy disks and Zip disks Identify the uses of tape Describe the characteristics of a hard disk Discuss PC Cards and the various types of miniature mobile storage media Describe the characteristics of optical discs Identify uses of microfilm and microfiche Next Storage What is storage? Holds data, instructions, and information for future use Storage medium is physical material used for storage Also called secondary storage p. 354 Fig. 7-1 Next Storage What is capacity? Number of bytes (characters) a storage medium can hold Kilobyte (KB) 1 thousand Megabyte (MB) 1 million Gigabyte (GB) Terabyte (TB) 1 trillion Petabyte (PB) 1 quadrillion Exabyte (EB) 1 quintillion Zettabyte (ZB) 1 sextillion Yottabyte (YB) p. 356 1 billion 1 septillion Next Storage How does volatility compare? Storage medium is nonvolatile—contents retained when power is off Memory is volatile—holds data and instructions temporarily Nonvolatile Volatile ON p. 356 OFF Screen Display Display appears Display disappears Memory (most RAM) (chips on motherboard) Data and instructions available to user Data and instructions erased Storage Medium (floppy disks, Zip disks, hard disks, CDs) Contents available to .

• Tin học văn phòng
• Discovering Computers
• Magnetic Disks
• Optical Discs
• Miniature Mobile Storage Media
• Putting It All Together
• Summary of Storage
• Introduction to Computers
• A World of Computers
• The Components of a Computer
• Advantages of Using Computers
• Disadvantages of Using Computers
• Discovering computers fundamentals
• Computers fundamentals
• World Wide Web
• System software
• Application software
• Functions of computers
• Internet connections
• Internet access
• Web browser
• User interface
• Multimedia programs
• Key features
• The Component of the system unit
• System units
• Control unit
• Computer keyboards
• Input devices
• Output devices
• Reading devices
• Storage device
• Internal hard disk
• Flash Memory Storage
• Cloud Storage
• Operating systems
• Utility programs
• Operating system functions
• Computer communications
• Uses of computer communications
• Network communications standards
• Database management
• The hierarchy of data
• Maintaining data
• File processing versus databases
• Computer security risks
• Computer security
• Network attacks
• Unauthorized access
• Information system development
• Programming languages
• System development
• Program development tools
• Enterprise Computing
• Information systems in the enterprise
• Enterprise wide technologies
• Cloud computing
• The Components of the System Unit
• Data Representation
• Expansion Slots
• Adapter Cards
• Mobile Computers
• History of the Internet
• How the Internet Works
• Web Publishing
• Internet Services
• Business Software
• Multimedia Software
• Application Software for Communications
• Alone Utility Programs
• The Keyboard
• Pointing Devices
• Voice Input
• Smart Phones
• Digital Cameras
• Video Input
• Display Devices
• Flat Panel Displays
• CRT Monitors
• Operating System Utility Programs
• Types of Operating Systems
• Communications Software
• Communications Over the Telephone Network
• Communications Devices
• DatabaseDefine the term
• System Development Cycle
• Implementation Phase
• Support Phase
• Information System Security
• Program Development
• Low Level Languages
• Procedural Languages
• Object Oriented Programming Languages
• Backup Procedures
• Summary of Enterprise Computing