Jasmeet Chap 01 Intro To Computers


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Jasmeet Chap 01 Intro To Computers

  1. 1. CHAPTER 1<br />INTRODUCTION TO COMPUTERS <br />By : Jasmeet Khosa <br />
  2. 2. What is a computer ?<br />How is computer defined ?<br /><ul><li>Electronic device operating under the control of instructions stored in its own memory</li></ul>Accepts Data <br />Processes Data into Information<br />Produces and stores results<br />
  3. 3. What is a computer ?<br />What is the information processing cycle ?<br /><ul><li> Input
  4. 4. Process
  5. 5. Output
  6. 6. Storage
  7. 7. Communication</li></li></ul><li>The components of a computer ?<br />What is an input device ?<br /><ul><li>Hardware used to enter data and instructions.</li></ul>What is and output device ?<br /><ul><li> Hardware that conveys information to one or more people.</li></ul>What is a system Unit ?<br /><ul><li>Case containing electronic components used to process data.</li></li></ul><li>The components of a computer ?<br />What are the two main components on the motherboard ?<br />Central Processing Unit (CPU)<br />* Also called as processor.<br />Memory<br />
  8. 8. The components of a computer ?<br />What is storage?<br /><ul><li>Holds Data, instructions and information for future use.
  9. 9. The two components of storage are:</li></ul>Storage Media<br />Storage Device<br />
  10. 10. The components of a computer ?<br />Examples of storage media are:<br />Portable, thin memory cards<br />USB flash drive<br />Floppy Disk<br />Compact Disk <br />(CD)<br />Hard Disk<br />
  11. 11. The components of a computer ?<br />What is a communications device ?<br />Hardware components that enables a computer to send and receive Data, instructions, and information.<br />Occurs over cables, telephone lines, cellular radio network, Satellites, and others transmission media.<br />
  12. 12. ADVANTAGES AND DISADVANTAGES OF USING COMPUTERS ?<br />What is the advantages of using computers ?<br />Reliability<br />Speed<br />Communications<br />Consistency<br />Storage<br />
  13. 13. ADVANTAGES AND DISADVANTAGES OF USING COMPUTERS ?<br />What is the disadvantages of using computers ?<br />Violation of privacy<br />Impact on Labor Force<br />Health Risks<br />Impact on Environment<br />
  14. 14. Network and the internet ?<br />What is a network ?<br /><ul><li>Collection of computers and devices connected together.</li></ul>Communications Device<br />Transmission Media<br />Enable a connection between computers<br />Cables<br />Satellites<br />Telephone lines<br />Cellular radio<br />One type is a modem<br />
  15. 15. Network and the internet ?<br />To save time and money<br />What are the reasons to internet ?<br />To share<br />Resources<br />Information<br />Hardware devices<br />Data<br />Software programs<br />
  16. 16. Network and the internet ?<br />Why do users access the internet ?<br />Communication<br />Information<br />Shopping<br />Banking and investing<br />Classes<br />Entertainment<br />
  17. 17. COMPUTER SOFTWARE?<br />What is a software ?<br />Consists of a series of instructions that tells the computer what to do<br />Also called a program<br />
  18. 18. COMPUTER SOFTWARE?<br />What is system software ?<br /><ul><li> Programs that control or maintain the operations of the computer and its devices.</li></ul>What is application software ?<br /><ul><li> Programs that performs that perform specific tasks for users.</li></ul>What is a programmers ?<br /><ul><li> Someone who develops applications or system software.</li></li></ul><li>Categories of computers ?<br />What are the categories of computers ?<br /><ul><li>Microcomputers
  19. 19. Mobile computers and mobile devices
  20. 20. Midrange Servers
  21. 21. Mainframes
  22. 22. Supercomputers
  23. 23. Embedded Computers</li></li></ul><li>Categories of computers ?<br />What are the categories of computers ?<br />Under microcomputers there are :<br />Desktop<br />Laptop<br />Tablet Pc<br />Palm PC<br />PDA<br />Net book<br />
  24. 24. SERVERS?<br />What types of servers are there ?<br /><ul><li>Midrange server
  25. 25. Powerful, large computer that supports up to a few thousand computer.
  26. 26. Mainframe server
  27. 27. Very powerful, expensive computer that supports thousands of computers.
  28. 28. Supercomputer</li></ul>-The faster, most powerful, most expensive computer. Used for application requiring complex mathematical calculations.<br />
  29. 29. Elements of an information system ?<br />What are the information system elements ?<br />Data<br />Hardware<br />Software<br />Procedures<br />People<br />
  30. 30. Computer applications in society ?<br /><ul><li> Education
  31. 31. Finance
  32. 32. Government
  33. 33. Healthcare
  34. 34. Science
  35. 35. Publishing
  36. 36. Travel
  37. 37. Industry</li></li></ul><li>Question ?<br />1) Give me few example of who needs and uses a power computer?<br />
  38. 38. Question ?<br /><ul><li>Engineers
  39. 39. Scientists
  40. 40. Architects
  41. 41. Desktop publishers
  42. 42. Graphic artists</li></li></ul><li>Question ?<br />2) What are the few functions of a PDA ?<br />
  43. 43. Question ?<br /><ul><li> Calendar
  44. 44. Appointment book
  45. 45. Address book
  46. 46. Calculator
  47. 47. Notepad</li>