Basic Computers


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Powerpoint presentation on Basic Computers, part of the Sims Library Computer Class series

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  • LCD stands for Liquid Crystal Display – like some of the flat panel tvs. Liquid Crystals are sandwiched between two thin glass plates.
  • Keyboard is laid out like a typewriter with a few extra keys F1= HELP ESC – stops actions from occurring in some instances Enter = Return, inserts a line break or clicks on the OK/Submit button Backspace key erases everything to the left of the cursor Delete key erases everything to the right of the cursor
  • Right click – allows for special options in programs and on websites, known as a Context Menu Left click – primary button for mouse, chooses programs, links, etc. Scroll wheel – allows rapid scrolling on websites and other long documents Left click for everything unless told otherwise by the program. Single click for everything except opening programs. You will be told if you need to double click in a program. There are many different types of Mice for your computer, but they all perform the same standard functions of Left and Right clicks.
  • Power supply also included, cooling fan, wires and other things
  • System Unit = Tower = CPU, which stands for Central Processing Unit. CPU is a microchip within the tower that runs the computer. Officially, the CPU is only the chip, but you can still call the tower the CPU and people will know what you mean
  • A typical desktop machine will have a hard disk with a capacity of between 400GB and 2TB (Terabytes; 1000 gigabytes ) Show hard drive of dead computer. Also show a floppy disk. Note how they are similar in style inside the casing, a thin magnetic disk. Imagine the hard drive is like a giant floppy disk.
  • Show RAM stick from computer. Demonstrate how and where they fit on the Mother board.
  • To see what Operating System your computer is using, right click with the mouse on the desktop icon called My Computer. A menu will open, left click on Properties, near the bottom. In the System Properties window it will say which version you are running.
  • The first 9 are the most common types of software available. Specialty software is used by companies or organizations to do special functions (i.e. OPAC). Specialty software can also be created specifically for one company by a software firm. For example, the library uses specialty software to manage the library accounts – patron information, check out details, and cataloging records.
  • The computers here at the library that you can now use with your Sims Library card have limited software. Suggest taking a 5-10 minute break at this point.
  • Text-based is slow, painful, labor-intensive Requires extensive knowledge of single letter or single word commands
  • GUI uses pictures, windows, buttons, drop-down menus, and icons to access and run programs. For example, look at the Desktop. Rather than having to type in a text command to connect to the Internet, this GUI Interfaces allows us to simply double-click on the icon for Internet Explorer.
  • Larger copy of this is picture on Page ii of the handout Desktop – blank space like clear space on your desk Icon – represents a program that is available on the computer Start button – allows quick access to many programs and other options on the computer Taskbar – shows what programs are currently open, even if you can’t see the window Clock – shows the time; if mouse hovers over it, it will show date
  • Larger version available on Page i of the Handout Let’s start at the bottom of the screen and work our way up! Task Bar – runs across the bottom of the computer screen. Contains the clock, Start button, and any open programs. Start – Opens the Star Menu; allows access to tools and programs on the computer Clock – Lower right hand side Status bar – Area of the screen that indicates the status of a process Scroll Bar – Right hand side; The vertical or horizontal bar in a document or window which is used to move to different locations on the window Toolbar – a list of tools for the current window Menu Bar – a list of options for the current window. Title Bar – contains the name of the file, application, or program that is in use. You can drag the window by grabbing the Title Bar. Close – “X” in upper right side Maximize/Resize – Image of a box or boxes; changes the size of the open window Minimize – “bar”; Lowers the current window into the Task bar. Does not CLOSE the program Task Bar, Start, Clock, Title Bar, Tool Bar and Close are almost always present; Maximize/Restore and Minimize are almost always in a program window; Status Bar and Scroll Bar vary depending on program and length of what is to be shown on the screen
  • Opening and Closing Programs Resizing Programs (minimize, maximize/restore, close) Visual Vocab
  • Basic Computers

    1. 1. BASIC COMPUTERS ©2010 S.Estey
    2. 2. WHAT WILL WE LEARN? <ul><li>The basic parts of a computer </li></ul><ul><li>And how to use it </li></ul>
    3. 3. PARTS OF A COMPUTER <ul><li>A computer has two main types of components: </li></ul><ul><ul><li>Hardware </li></ul></ul><ul><ul><ul><li>The parts of the computer that you can physically touch and move are called hardware . </li></ul></ul></ul><ul><li>Software </li></ul><ul><ul><ul><li>The programs that tell the computer what to do are called software . </li></ul></ul></ul>
    4. 4. HARDWARE <ul><li>The most common types of hardware: </li></ul><ul><ul><li>Monitor </li></ul></ul><ul><ul><li>Keyboard </li></ul></ul><ul><ul><li>Mouse </li></ul></ul><ul><ul><li>System UnitCPU, or “tower” </li></ul></ul><ul><ul><li>Printer </li></ul></ul><ul><ul><li>Speakers/headphones </li></ul></ul>
    5. 5. MONITOR <ul><li>Displays text and graphics generated by the computer’s software. </li></ul><ul><li>Different sizes and types. </li></ul><ul><li>LCD screens </li></ul><ul><li>Measured diagonally in “viewable inches” </li></ul>
    6. 6. KEYBOARD <ul><ul><li>Enter information into the computer </li></ul></ul><ul><ul><li>Laid out like a typewriter </li></ul></ul><ul><ul><li>Extra keys that have special functions </li></ul></ul>
    7. 7. MOUSE <ul><ul><li>Pointing device used to select and manipulate objects on the screen </li></ul></ul><ul><ul><li>Commonly has two buttons, plus a scroll wheel </li></ul></ul>
    8. 8. PRINTER & SPEAKERS <ul><li>Printer: </li></ul><ul><ul><li>Prints the text, pictures </li></ul></ul><ul><ul><li>Different types available (ink jet, laser) </li></ul></ul><ul><li>Speakers: </li></ul><ul><ul><li>Used to hear the audio/sounds created by the computer </li></ul></ul><ul><ul><li>Headphones can be used as well </li></ul></ul>
    9. 9. SYSTEM UNIT <ul><li>The tower has several things inside: </li></ul><ul><ul><li>CPU </li></ul></ul><ul><ul><li>Hard drive </li></ul></ul><ul><ul><li>Disk drives </li></ul></ul><ul><ul><li>Memory </li></ul></ul>
    10. 10. CPU <ul><li>CPU = Central Processing Unit </li></ul><ul><li>CPU is the chip that actually runs the computer </li></ul><ul><li>Interprets the software and operates the hardware </li></ul>
    11. 11. HARD DRIVE <ul><li>Internal, permanent storage device for data </li></ul><ul><li>Acts as the electronic filing cabinet </li></ul><ul><li>Stores: </li></ul><ul><ul><li>Operating system </li></ul></ul><ul><ul><li>Files </li></ul></ul><ul><ul><li>Programs/Software </li></ul></ul><ul><ul><li>Documents </li></ul></ul><ul><ul><li>And more </li></ul></ul>
    12. 12. DISK DRIVES
    13. 13. FLOPPIES & CD-ROMS <ul><li>Floppy Drives: </li></ul><ul><ul><li>Use floppy disks for data storage </li></ul></ul><ul><ul><li>1.44 Megabytes of space available </li></ul></ul><ul><ul><li>Practically obsolete today </li></ul></ul><ul><li>CD-ROM Drives </li></ul><ul><ul><li>“ Read only” CD-ROMs & music CDs. </li></ul></ul><ul><ul><li>700 Megabytes of space available </li></ul></ul>
    14. 14. DVDS & FLASH DRIVES <ul><li>DVD Drives </li></ul><ul><ul><li>DVD similar to a CD-ROM, but greater space capacity </li></ul></ul><ul><ul><li>Frequently used for multimedia as well as data storage. </li></ul></ul>
    15. 15. DVDS & FLASH DRIVES <ul><li>Flash Drives </li></ul><ul><ul><li>Small, portable data storage devices that plug into a USB port. </li></ul></ul><ul><ul><li>Have replaced most previous portable data storage devices </li></ul></ul><ul><ul><li>Range from </li></ul></ul><ul><ul><li>Thumbdrives, USB drives, memory sticks </li></ul></ul>
    16. 16. MEMORY <ul><li>ROM </li></ul><ul><ul><ul><li>Read Only Memory </li></ul></ul></ul><ul><ul><ul><li>This is permanent memory that stores essential software for the computer. </li></ul></ul></ul>
    17. 17. MEMORY <ul><li>RAM </li></ul><ul><ul><ul><li>Random Access Memory </li></ul></ul></ul><ul><ul><ul><li>It is the working memory of the computer. If the computer is turned off, this memory is erased. Files are saved from RAM to the hard drive. </li></ul></ul></ul>
    18. 18. SOFTWARE <ul><li>Operating System is the most important piece of software for the computer. </li></ul><ul><li>There are many different types of software available for computers. </li></ul><ul><li>Software can also be called “programs” </li></ul>
    19. 19. OPERATING SYSTEM <ul><li>The main control program of the computer </li></ul><ul><ul><li>Schedules tasks </li></ul></ul><ul><ul><li>Communicates with hardware and peripherals </li></ul></ul><ul><ul><li>Presents the basic User Interface </li></ul></ul><ul><li>All other software on the computer must communicate with the operating system. </li></ul>
    20. 20. TYPES OF SOFTWARE <ul><li>Word Processing </li></ul><ul><li>Presentation </li></ul><ul><li>Spreadsheet </li></ul><ul><li>Internet Browser </li></ul><ul><li>Drawing </li></ul><ul><li>Database creation </li></ul><ul><li>Photo Editing </li></ul><ul><li>Video Editing </li></ul><ul><li>Virus Checking </li></ul><ul><li>Specialty software </li></ul>
    21. 21. LIBRARY SOFTWARE <ul><li>We offer basic software, including: </li></ul><ul><li>Word processing (Word®) </li></ul><ul><li>Spreadsheet (Excel®) </li></ul><ul><li>Presentation (PowerPoint®) </li></ul><ul><li>Web browsing (Internet Explorer®) </li></ul>
    22. 22. INTERFACES <ul><li>An interface is the way the user tells the software what to do and how the computer displays information and options to the user. </li></ul><ul><li>Originally, all computers had text-based interfaces. </li></ul>
    23. 23. GRAPHICAL USER INTERFACES <ul><li>“ GUI”, Pronounced “gooey” </li></ul><ul><li>Use pictures/icons rather than text-based </li></ul><ul><li>Almost all Windows (PCs) and Mac programs use GUIs </li></ul><ul><ul><li>Drop-down menus </li></ul></ul><ul><ul><li>Windows </li></ul></ul><ul><ul><li>Buttons </li></ul></ul><ul><ul><li>Icons </li></ul></ul>
    24. 24. DESKTOP <ul><li>The Windows desktop uses a graphical user interface to make it easier to use. </li></ul><ul><li>The desktop is the beginning screen for the computer. </li></ul><ul><li>You can access all of the programs on the computer from this screen. </li></ul>
    25. 25. PROGRAM WINDOW <ul><li>Most program windows have very similar features. </li></ul><ul><li>Some programs have different toolbars and menus. </li></ul>
    26. 26. PRACTICE MAKES PERFECT! <ul><li>If you don’t practice your computer skills, you will forget them. </li></ul><ul><li>If you have any questions, please feel free to ask them now. </li></ul>