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Microsoft Office 2007 – Illustrated Introductory, Premium Video Edition

Microsoft Office 2007 – Illustrated Introductory, Premium Video Edition. Understanding Essential Computer Concepts. Investigating Data Processing. Kilobyte ( KB ) = one thousand bytes Megabyte ( MB ) = one million bytes Gigabyte ( GB ) = one billion bytes

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Microsoft Office 2007 – Illustrated Introductory, Premium Video Edition

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  1. Microsoft Office 2007 – Illustrated Introductory, Premium Video Edition Understanding Essential Computer Concepts

  2. Investigating Data Processing • Kilobyte (KB) = one thousand bytes • Megabyte (MB) = one million bytes • Gigabyte (GB) = one billion bytes • Terabyte (TB) = one trillion bytes Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  3. Understanding Memory • Computer memory is a set of storage locations. • There are five types of memory: • Random access memory (RAM) • Cache memory • Virtual memory • Read-only memory • Complementary metal oxide semiconductor memory (CMOS) Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  4. Understanding Memory • RAM • Temporary memory that is constantly changing while the computer is on. • Also called volatile memory and temporary memory. • Cache memory • Special high-speed memory chip on the motherboard or CPU • Stores frequently and recently accessed data and commands. Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  5. Understanding Memory • Virtual memory is extra memory that simulates RAM if more is needed. • Read-only memory (ROM) is the permanent storage location for a set of instructions the computer uses. • CMOS memory is semi-permanent information about where essential software is stored. Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  6. Understanding Storage Media • Common magnetic storage devices • hard disks—several magnetic oxide covered metal platters usually sealed in a case inside the computer • tape—inexpensive and slow storage when back up of large quantities of data is necessary • floppy disks—flat circles of magnetic oxide-coated mylar enclosed in a hard plastic case; almost obsolete Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  7. Understanding Storage Media • Types of optical storage devices • CD—can store 700 MB of data • DVD—can store between 4.7 and 15.9 GB of data • Blu-ray discs and HD-DVD can store between 15 and 50 GB of data Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  8. Understanding Storage Media • Flash memory—similar to ROM except that it can be written to more than once. • Flash memory cards • small, portable cards encased in hard plastic • used in digital cameras, handheld computers, video game controllers, and other devices Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  9. Understanding Storage Media • USB flash storage device(USB drive, flash drive) • popular type of flash memory • available in a wide range of sizes from 32 MB to 16 GB • plug directly into the USB port of a personal computer • are about the size of a pack of gum and often have a ring that you can attach to your key chain. Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  10. Erasing and Rewriting on CDs and DVDs • CD-ROMs are for “read-only” access. • CD-R drives allow you to record data on a CD-R disk. • CD-RW drives allow you to write data on a CD-RW disk and access and modify data. • DVD-R and DVD+R are recordable. Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  11. Exploring Data Communications Data communications is the transmission of text, numeric, voice, or video data from one computer to another. Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  12. Exploring Data Communications • Parallel port • transmits data eight bits at a time • Serial port • transmits data one bit at a time • SCSI (small computer system interface, pronounced “scuzzy”) port • provides an interface for one or more peripheral devices at the same port • USB (Universal Serial Bus) port • a high-speed serial port which allows multiple connections at the same port Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  13. Exploring Data Communications • Sound card port • usually includes jacks for speakers and a microphone • Ethernet port • used to connect to another computer, a LAN, a modem, or sometimes directly to the Internet • allows data to be transmitted at high speeds. Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

  14. Exploring Data Communications Power connection Computer ports and connections Mouse port Keyboard port Audio connection Monitor port FireWire port USB ports Network port Speaker and microphone connections Phone line connection Microsoft Office 2007-Illustrated Introductory, Premium Video Edition

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