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COMPUTER COMPONENTS AND TYPES

COMPUTER COMPONENTS AND TYPES. Chapter Two. What Is a Computer?. A computer is an electronic device, operating under the control of instructions stored in its own memory. Information Processing Cycle. Pages 3 - 4. The Components of a Computer.

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COMPUTER COMPONENTS AND TYPES

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  1. COMPUTER COMPONENTS AND TYPES Chapter Two Discovering Computers Fundamentals, 2012 Edition Chapter 1

  2. What Is a Computer? • A computer is an electronic device, operating under the control of instructions stored in its own memory Information Processing Cycle Pages 3 - 4 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  3. The Components of a Computer • A computer contains many electric, electronic, and mechanical components known as hardware Pages 4 - 7 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  4. The Components of a Computer Page 5 Figure 1-3 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  5. Categories of Computers Pages 14 - 15 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  6. Personal Computers • A personal computercan perform all of its input, processing, output, and storage activities by itself Pages 15 - 16 Figures 1-13 - 1-14 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  7. Mobile Computers and Mobile Devices Pages 16 - 18 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  8. Game Consoles • A game consoleis a mobile computing device designed for single-player or multiplayer video games Page 18 Figure 1-21 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  9. Servers • A server controls access to the hardware, software, and other resources on a network • Provides a centralized storage area for programs, data, and information Page 19 Figure 1-22 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  10. Mainframes • A mainframe is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously Page 19 Figure 1-23 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  11. Supercomputers • A supercomputer is the fastest, most powerful computer • Fastest supercomputers are capable of processing more than one quadrillion instructions in a single second Page 19 Figure 1-24 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  12. Embedded Computers • An embedded computeris a special-purpose computer that functions as a component in a larger product Page 19 Discovering Computers Fundamentals, 2012 Edition Chapter 1

  13. Inputs

  14. What Is Input? • Input is any data and instructions entered into the memory of a computer Pages 258 – 259 Figure 5-1 Discovering Computers 2012: Chapter 5

  15. What Are Input Devices Page 260 Discovering Computers 2012: Chapter 5

  16. The Keyboard • A keyboard is an input device that contains keys users press to enter data and instructions into a computer • It could be wired or wireless • It has many different types and styles. Page 260 Figure 5-2

  17. Pointing Devices Examples Mouse Trackball Touchpad Pointing stick Page 263 Discovering Computers 2012: Chapter 5

  18. Touch Screens and Touch-Sensitive Pads • A touch screenis a touch-sensitive display device Page 266 Figures 5-12 – 5-13 Discovering Computers 2012: Chapter 5

  19. Pen Input • With pen input, you touch a stylusor digital pen on a flat surface to write, draw, or make selections Page 268 Figure 5-16 Discovering Computers 2012: Chapter 5

  20. Voice Input • Voice inputis the process of entering input by speaking into a microphone • Audio inputis the process of entering any sound into the computer Page 274 Figure 5-22 Discovering Computers 2012: Chapter 5

  21. Scanners and Reading Devices Page 277 Figure 5-27 Discovering Computers 2012: Chapter 5

  22. Biometric Input • Biometrics authenticates a person’s identity by verifying a personal characteristic Pages 282 - 283 Discovering Computers 2012: Chapter 5

  23. Outputs Discovering Computers 2012: Chapter 6

  24. What Is Output? • Output is data that has been processed into a useful form Pages 304 – 305 Figure 6-1 Discovering Computers 2012: Chapter 6

  25. What Is Output? • An output deviceis any type of hardware component that conveys information to one or more people Page 305 Discovering Computers 2012: Chapter 6

  26. Display Devices • A display devicevisually conveys text, graphics, and video information • A monitor is packaged as a separate peripheral • LCD monitor • Widescreen Pages 306 – 207 Figures 6-2 – 6-3 Discovering Computers 2012: Chapter 6

  27. Display Devices • Liquid crystal display (LCD) uses a liquid compound to present information on a display device Page 308 Discovering Computers 2012: Chapter 6

  28. Display Devices • Plasma monitorsare display devices that use gas plasma technology and offer screen sizes up to 150 inches Page 311 Figure 6-8 Discovering Computers 2012: Chapter 6

  29. Printers • A printer produces text and graphics on a physical medium • Printed information is called a hard copy, or printout • Landscape or portrait orientation Page 313 Figure 6-11 Discovering Computers 2012: Chapter 6

  30. Printers Page 315 Figure 6-13 Discovering Computers 2012: Chapter 6

  31. Printers • A nonimpact printerforms characters and graphics on a piece of paper without actually striking the paper Page 315 Discovering Computers 2012: Chapter 6

  32. Printers • An ink-jet printerforms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper • Color or black-and-white • Printers with a higher dpi (dots per inch) produce a higher quality output Pages 316 – 317 Figure 6-15 Discovering Computers 2012: Chapter 6

  33. Printers Page 318 Discovering Computers 2012: Chapter 6

  34. Printers Pages 319 - 320 Discovering Computers 2012: Chapter 6

  35. Printers • A multifunction peripheral(MFP) is a single device that prints, scans, copies, and in some cases, faxes • Sometimes called an all-in-one device Pages 320 – 321 Figure 6-20 Discovering Computers 2012: Chapter 6

  36. Printers • A thermal printergenerates images by pushing electrically heated pins against the heat-sensitive paper Page 321 Figure 6-21 Discovering Computers 2012: Chapter 6

  37. Printers • A mobile printeris a small, lightweight, battery-powered printer that allows a mobile user to print from a notebook computer, smart phone, or other mobile device Page 321 Figure 6-22 Discovering Computers 2012: Chapter 6

  38. Printers • A label printeris a small printer that prints on adhesive-type material • A postage printer prints postage stamps • Postage also can be printed on other types of printers Page 322 Figure 6-23 Discovering Computers 2012: Chapter 6

  39. Printers • Plotters are used to produce high-quality drawings • Large-format printerscreate photo-realistic quality color prints on a larger scale Page 322 Figure 6-24 Discovering Computers 2012: Chapter 6

  40. Printers • Impact printersform characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper Pages 322 - 323 Discovering Computers 2012: Chapter 6

  41. Printers • A dot-matrix printerproduces printed images when tiny wire pins on a print head mechanism strike an inked ribbon • A line printerprints an entire line at a time Page 323 Figure 6-25 Discovering Computers 2012: Chapter 6

  42. Speakers, Headphones, and Earbuds • An audio output deviceproduces music, speech, or other sounds Page 323 Figure 6-26 Discovering Computers 2012: Chapter 6

  43. Speakers, Headphones, and Earbuds • Headphones are speakers that cover or are placed outside of the ear • Earbuds (also called earphones) rest inside the ear canal Page 324 Figure 6-27 Discovering Computers 2012: Chapter 6

  44. The components of the system unit Discovering Computers 2012: Chapter 4

  45. The System Unit • The system unitis a case that contains electronic components of the computer used to process data Page 210 Figure 4-1 Discovering Computers 2012: Chapter 4

  46. The System Unit • The inside of the system unit on a desktop personal computer includes: Page 211 Figure 4-2 Discovering Computers 2012: Chapter 4

  47. The System Unit • The motherboard is the main circuit board of the system unit • A computer chip contains integrated circuits Page 212 Figure 4-3 Discovering Computers 2012: Chapter 4

  48. Processor • The processor, also called the central processing unit (CPU), interprets and carries out the basic instructions that operate a computer • Contain a control unit and an arithmetic logic unit (ALU) Page 213 Discovering Computers 2012: Chapter 4

  49. Processor Page 213 Figure 4-4 Discovering Computers 2012: Chapter 4

  50. Processor • The control unitis the component of the processor that directs and coordinates most of the operations in the computer • The arithmetic logic unit(ALU) performs arithmetic, comparison, and other operations Page 214 Discovering Computers 2012: Chapter 4

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