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New microsoft office word document

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approaches of phsycology

approaches of phsycology

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    New microsoft office word document New microsoft office word document Document Transcript

    • Name:Genelie Odi1.) What is the computer? A computer is a programmable machine designed to sequentially andautomatically carry out a sequence of arithmetic or logical operations.2.) Identify and describe the basic part of the computerSystem unitThe system unit is the core of a computer system. Usually its a rectangular boxplaced on or underneath your desk. Inside this box are many electronic componentsthat process information. The most important of these components is the centralprocessing unit (CPU), or microprocessor, which acts as the "brain" of yourcomputer. Another component is random access memory (RAM), which temporarilystores information that the CPU uses while the computer is on. The informationstored in RAM is erased when the computer is turned off.Almost every other part of your computer connects to the system unit using cables.The cables plug into specific ports (openings), typically on the back of the systemunit. Hardware that is not part of the system unit is sometimes called a peripheraldevice or device.StorageYour computer has one or more disk drives—devices that store information on ametal or plastic disk. The disk preserves the information even when your computer isturned off.Hard disk driveYour computers hard disk drive stores information on a hard disk, a rigid platter orstack of platters with a magnetic surface. Because hard disks can hold massiveamounts of information, they usually serve as your computers primary means ofstorage, holding almost all of your programs and files. The hard disk drive is normallylocated inside the system unit.CD and DVD drivesNearly all computers today come equipped with a CD or DVD drive, usually locatedon the front of the system unit. CD drives use lasers to read (retrieve) data from aCD, and many CD drives can also write (record) data onto CDs. If you have arecordable disk drive, you can store copies of your files on blank CDs. You can alsouse a CD drive to play music CDs on your computer.
    • Floppy disk driveFloppy disk drives store information on floppy disks, also called floppies or diskettes.Compared to CDs and DVDs, floppy disks can store only a small amount of data.They also retrieve information more slowly and are more prone to damage. For thesereasons, floppy disk drives are less popular than they used to be, although somecomputers still include them.MouseA mouse is a small device used to point to and select items on your computer screen.Although mice come in many shapes, the typical mouse does look a bit like an actualmouse. Its small, oblong, and connected to the system unit by a long wire thatresembles a tail. Some newer mice are wireless.A mouse usually has two buttons: a primary button (usually the left button) and asecondary button. Many mice also have a wheel between the two buttons, whichallows you to scroll smoothly through screens of information.When you move the mouse with your hand, a pointer on your screen moves in thesame direction. (The pointers appearance might change depending on where itspositioned on your screen.) When you want to select an item, you point to the itemand then click (press and release) the primary button. Pointing and clicking with yourmouse is the main way to interact with your computer. For more information,.KeyboardA keyboard is used mainly for typing text into your computer. Like the keyboard on atypewriter, it has keys for letters and numbers, but it also has special keys: The function keys, found on the top row, perform different functions depending on where they are used. The numeric keypad, located on the right side of most keyboards, allows you to enter numbers quickly. The navigation keys, such as the arrow keys, allow you to move your position within a document or webpage.MonitorA monitor displays information in visual form, using text and graphics. The portion ofthe monitor that displays the information is called the screen. Like a television screen,a computer screen can show still or moving pictures.
    • There are two basic types of monitors: CRT (cathode ray tube) monitors and LCD(liquid crystal display) monitors. Both types produce sharp images, but LCD monitorshave the advantage of being much thinner and lighter. CRT monitors, however, aregenerally more affordable.PrinterA printer transfers data from a computer onto paper. You dont need a printer to useyour computer, but having one allows you to print e-mail, cards, invitations,announcements, and other materials. Many people also like being able to print theirown photos at home.The two main types of printers are inkjet printers and laser printers. Inkjet printers arethe most popular printers for the home. They can print in black and white or in fullcolor and can produce high-quality photographs when used with special paper. Laserprinters are faster and generally better able to handle heavy use.SpeakersSpeakers are used to play sound. They may be built into the system unit orconnected with cables. Speakers allow you to listen to music and hear sound effectsfrom your computer.ModemTo connect your computer to the Internet, you need a modem. A modem is a devicethat sends and receives computer information over a telephone line or high-speedcable. Modems are sometimes built into the system unit, but higher-speed modemsare usually separate components.3.) Differentiate hardware, software, and people wareHardware -is the stuff you can actually see and touch, and would likely break if youthrew it out a fifth-story windowComputer software or just software- is a collection of computer programs andrelated data that provide the instructions for telling a computer what to do and how todo it.Peopleware- can refer to anything that has to do with the role of people in thedevelopment or use of computer software and hardware systems, including suchissues as developer productivity, teamwork, group dynamics, the psychology ofprogramming, project management, organizational factors, human interface design,and human-machine-interaction.
    • Pew Internet and American Life Project. 2008. Daily Internet Xavier University: The Impact of Procrastination and Internet Use on College Students Academic Performance; Amanda Lawless^ The Shallows: What the Internet Is Doing to Our Brains, Nicholas Carr, W. W. Norton, 7 June 2010,276 pp., ISBN-10: 0393072223, ISBN-13: 978-0393072228Carole Hughes, Boston College. "The Relationship Between Internet Use and Loneliness AmongCollege Students". Boston College. Retrieved 2011-08-11.^ World Internet Usage Statistics News and Population Stats updated for 30 June 2010. Retrieved 20Feb 2011.