Lesson 1


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Lesson 1

  1. 1. Computer Basics<br />CIS 113-01<br />Bladen Community College<br />August 21, 2009<br />
  2. 2. OBJECTIVES<br />In basic terms, define the word computer .<br />Discuss various ways computers can be categorized.<br />Identify six types of computers designed for individual use.<br />Explain the importance of computers in today’s society.<br />Describe how computers are used in various sectors of our society.<br />
  3. 3. What is a Computer?<br />A computer is an electronic device that processes data, converting it into information that is useful to people.<br />A computer is controlled by programmed instructions, which give the machine a purpose and tell it what to do.<br />Earliest computers were analog systems.<br />Today we have digital computers.<br />
  4. 4. How Can Computers Be Categorized?<br />Some computers are designed to be used by one person, groups of people, or by no people at all.<br />Can be categorized by their power (speed at which they operate and the types of tasks they can handle)<br />Can also be subcategorized by price, types of hardware they contain, and software they run on.<br />
  5. 5. Computers for Individual Users<br />Desktop computers<br />Workstations<br />Notebook computers<br />Tablet computers<br />Handheld computers<br />Smart phones<br />
  6. 6. Desktop Computers<br />The most common personal computer<br />Designed to sit on (or under) a desk or table<br />Can be found in schools, homes, and offices<br />Desktop computers can be used for learning, work, and play<br />
  7. 7. Workstations<br />Single-user computer that has more power and features than a standard desktop PC.<br />Are popular among scientists, engineers, and animators<br />They often have large, high-resolution monitors and accelerated graphics-handling capabilities<br />
  8. 8. Notebook Computers<br />Are called laptops<br />They are lightweight<br />Portable<br />Can operate on alternating current or special batteries<br />
  9. 9. Handheld PCs<br />Small enough to fit in your hand<br />The most popular handheld is the PDA (Personal Digital Assistant)<br />Is used for taking notes, displaying telephone numbers and addresses, and keeping track of dates or agendas.<br />Can be used to access the Internet<br />
  10. 10. Smart Phones<br />Cellular phones that offer advanced features<br />Web and e-mail access<br />Special software such as personal organizers<br />Special hardware such as digital cameras or music players.<br />Some break in half to reveal a miniature keyboard<br />
  11. 11. Why Are Computers Important?<br />Computers are important because they store and process information that is important and essential to our lives.<br />
  12. 12. Why Are Computers Important? (cont.)<br />Home<br />Communications (e-mail)***<br />Business work done at home<br />Schoolwork<br />Entertainment<br />Finances<br />Schools<br />Computer skills are being taught to students at a young age<br />Computers are being incorporated into student’s daily work assignments<br />
  13. 13. Why Are Computers Important? (cont.)<br />Small Business<br />Enables small businesses to operate more efficiently by allowing workers to do a wider variety of tasks<br />Industry<br />Design<br />Shipping<br />Process Control<br />
  14. 14. Why Are Computers Important? (cont.)<br />Government<br />Population<br />Taxes<br />Military<br />Police<br />Health Care<br />Managing schedules<br />Handling billing<br />Making patient diagnoses<br />Performing complex surgery<br />
  15. 15. Lets Review<br />What is a computer?<br />Explain a few of the different ways in which computers can be categorized.<br />List six types of computers that are designed for use by a single user.<br />What is the most popular use for home computers?<br />How are computer technologies used by the military?<br />How are computer technologies being used to train surgeons.<br />