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  1. 1. <ul><li> Requirement </li></ul><ul><li> For </li></ul><ul><li> EDP 111 </li></ul><ul><li>Prepared by: </li></ul><ul><li>Orville Troy Somcio </li></ul>
  2. 2. <ul><li>Computer </li></ul><ul><li>System </li></ul><ul><li> Hardware </li></ul>
  3. 3. Input Devices <ul><li>enable a user to input data and commands to the computer to be processed </li></ul><ul><li>is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system (such as a computer). </li></ul>
  4. 4. <ul><li>Examples </li></ul><ul><li>of </li></ul><ul><li>Input Devices </li></ul>
  5. 5. Keyboard <ul><li>is the most widely used input device </li></ul><ul><li>uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches. </li></ul><ul><li>Keyboards are divided into sections </li></ul>
  6. 6. Sections of Keyboards <ul><li>Typewriter keys </li></ul><ul><li>The standard alphabetic and numeric characters you would find on a typewriter </li></ul><ul><li>Function keys </li></ul><ul><li>Special keys that perform some specific function for the application being run </li></ul>
  7. 7. Sections of Keyboard <ul><li>Numeric keypad </li></ul><ul><li>Used for mathematical operations </li></ul><ul><li>Directional keys </li></ul><ul><li>Used to move the cursor around the screen </li></ul>
  8. 8. Keyboard
  9. 9. The Mouse <ul><li>is a pointing device that rolls around on a flat surface and controls the location of the pointer on the screen </li></ul><ul><li>is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface </li></ul>
  10. 10. Mouse Functions <ul><ul><li>Pointing </li></ul></ul><ul><ul><li>Placing the on-screen pointer at a specific place </li></ul></ul><ul><ul><li>Clicking </li></ul></ul><ul><ul><li>Pressing and releasing the mouse button </li></ul></ul>
  11. 11. <ul><ul><li>Dragging </li></ul></ul><ul><ul><li>Holding down the mouse button and dragging an object to a new location by dragging the mouse </li></ul></ul><ul><ul><li>Double-clicking </li></ul></ul><ul><ul><li>Pressing and releasing the mouse button twice very quickly </li></ul></ul><ul><ul><li>Right-clicking </li></ul></ul><ul><ul><li>Pressing the right mouse button </li></ul></ul>
  12. 12. The Mouse
  13. 13. <ul><li>Other </li></ul><ul><li> Pointing </li></ul><ul><li> Devices </li></ul>
  14. 14. Trackball <ul><li>This is like a mouse turned upside down </li></ul><ul><li>You roll a ball around with your fingers to control the location of the pointer </li></ul><ul><li>frequently are found on notebook computers. </li></ul>
  15. 15. Trackball
  16. 16. Joystick and Wheel <ul><li>consist of a metal or plastic handle mounted on a base that you can move in any direction to move the pointer or other object </li></ul><ul><li>typically are used for video games </li></ul><ul><li>Most have buttons that can be pushed or clicked to control input/output </li></ul>
  17. 17. Joystick and wheel
  18. 18. Pointing Stick <ul><li>A pressure-sensitive device that resembles a pencil eraser </li></ul><ul><li>found mostly on notebook computers </li></ul><ul><li>has a replaceable rubber cap, traditionally red on the ThinkPad but also found in other colors on other machines </li></ul>
  19. 19. Pointing Stick
  20. 20. Graphics Tablet <ul><li>A flat drawing surface connected to the computer </li></ul><ul><li>The user draws on the surface, and the figures or writing on the tablet can be input to the computer for processing </li></ul><ul><li>These tablets may also be used to capture data or handwritten signatures </li></ul>
  21. 21. Graphics Tablet
  22. 22. Touch Display <ul><li>Screens that contain pictures or shapes that the user can press to input that data </li></ul>
  23. 23. Stylus/Digital Pen <ul><li>Used with mobile devices to input data </li></ul>
  24. 24. Touchpad <ul><li>Used mostly in laptop/notebook computers </li></ul>
  25. 25. Audio/Voice Input <ul><li>Inputting sound and/or voice </li></ul><ul><li>These usually require a microphone and special voice recognition software to be installed on the computer </li></ul><ul><li>Video Input </li></ul><ul><li>Input from a camcorder or VCR using video capture cards </li></ul>
  26. 26. Scanners <ul><li>Devices that can convert a graphical image into a digital image and input it to the computer </li></ul><ul><li>are types of source data entry machines to input automatically data (i.e. prices, code, etc.) in digital form from external sources like bar code to the computer </li></ul>
  27. 27. Types of Scanners
  28. 28. Image Scanners <ul><li>Used for scanning images and text </li></ul>
  29. 29. Bar Code Scanners <ul><li>Read product bar codes </li></ul>
  30. 30. Magnetic scanners <ul><li>Read magnetic strip on a credit card </li></ul>
  31. 31. Digital Cameras <ul><li>Used to take pictures and store them on a magnetic disk instead of on film </li></ul><ul><li>Their images can be input directly into the computer </li></ul><ul><li>a camera that takes video or still photographs, or both, digitally by recording images via an electronic image sensor </li></ul>
  32. 32. Digital Cameras
  33. 33. Biometric Input <ul><li>Uses fingerprint, face, handwriting, and voice for identification </li></ul>
  34. 34. <ul><li>Magnetic </li></ul><ul><li>Storage </li></ul><ul><li>Devices </li></ul>
  35. 35. Floppy Disks <ul><li>Small, portable disks that hold a limited amount of data </li></ul>
  36. 36. Hard Disks <ul><li>Large-capacity and fast-access storage devices </li></ul>
  37. 37. Zip Disks <ul><li>Auxiliary storage devices that can hold large quantities of data and can be portable </li></ul>
  38. 38. Magnetic Tape Drives <ul><li>Used for making system backups and storing large quantities of data </li></ul>
  39. 39. <ul><li>Solid-State </li></ul><ul><li>Storage </li></ul><ul><li>Media </li></ul>
  40. 40. Solid-State Storage Media <ul><li>Non-volatile removable media </li></ul><ul><li>Miniature mobile media </li></ul><ul><ul><li>Uses integrated circuits </li></ul></ul><ul><li>USB flash drive </li></ul><ul><ul><li>Connects to the computer via a USB port </li></ul></ul>
  41. 41. Caring for Storage Media <ul><li>To safeguard your data from damage, follow these tips when dealing with removable media: </li></ul><ul><ul><li>Keep away from magnetic fields. </li></ul></ul><ul><ul><li>Avoid extreme temperatures. </li></ul></ul><ul><ul><li>Never try to disassemble the case. </li></ul></ul><ul><ul><li>Remove media from drive when not being used. </li></ul></ul>
  42. 42. Tips for dealing with Storage Media <ul><ul><li>Write-protect important data. </li></ul></ul><ul><ul><li>Hold optical disks at their edges. </li></ul></ul><ul><ul><li>Never remove the media from the drive if the access light is on. </li></ul></ul><ul><ul><li>Keep disks in a sturdy case when transporting them. </li></ul></ul>
  43. 43. Output Devices <ul><li>is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) to the outside world. </li></ul>
  44. 44. <ul><li> Examples </li></ul><ul><li>of </li></ul><ul><li>Output Devices </li></ul>
  45. 45. Monitors <ul><li>are used to display video output to user </li></ul><ul><li>a device that displays images or symbols generated by computers </li></ul><ul><li>Maybe monochromatic or color </li></ul><ul><li>Monochromatic monitors display output in a single-color display. </li></ul>
  46. 46. Factors that influence the quality of a monitor <ul><ul><li>Screen size: The diagonal measurement in inches of the display area </li></ul></ul><ul><ul><li>Resolution: The number of pixels that can be displayed in the display area </li></ul></ul><ul><ul><li>Dot pitch: The distance between each pixel in the display area </li></ul></ul>
  47. 47. Printers <ul><li>are used to create hard copy of a document or image </li></ul><ul><li>It varies by speed, quality and price </li></ul><ul><li>a computer peripheral that reproduces text and/or pictures on paper or other kind of printable surface </li></ul>
  48. 48. Types of Printers
  49. 49. Laser Printer <ul><li>Produce images using the same techniques as copier machines </li></ul>
  50. 50. Ink Jet Printer <ul><li>Uses fine nozzles to spray ink onto the page as the paper passes through </li></ul>
  51. 51. Dot matrix <ul><ul><li>Work similarly to a typewriter in that ink is transferred to the paper by some part of the printer striking a ribbon to transfer an image </li></ul></ul>
  52. 52. <ul><li>Other Types </li></ul><ul><li>Of </li></ul><ul><li>Output Devices </li></ul>
  53. 53. Speakers and Headsets
  54. 54. Fax machines and Fax Modems <ul><li>A device you can attach to a personal computer that enables you to transmit and receive electronic documents as faxes </li></ul>
  55. 55. Data Projectors <ul><li>A device that projects computer output onto a white or silver fabric screen that is wall, ceiling or tripod mounted. </li></ul><ul><li>It is widely used in classrooms and auditoriums for instruction and slide presentations. </li></ul>
  56. 56. Connecting I/O devices to the computer <ul><li>Input and output devices must be connected to the computer before they can be used </li></ul><ul><li>Plug the device into an existing socket or port on the back of the computer. </li></ul>
  57. 57. Connecting I/O devices to the computer <ul><ul><li>Install an expansion card with the port you need included on the back of the card. </li></ul></ul><ul><ul><li>Connect wirelessly. </li></ul></ul>