Computer System Hardware Output and Storage of the Computer
Objectives <ul><li>To learn the most commonly used input devices </li></ul><ul><li>To learn and know the most commonly use...
Input and Output Devices <ul><li>Input devices enable a user to input data and commands to the computer to be processed. <...
Input Devices: Keyboard <ul><li>The Keyboard is the most widely used input device.  </li></ul><ul><li>As you press keys on...
Cont. Keyboard <ul><li>A  keyboard  is a  human interface device  which is represented as a set of buttons. Each button, o...
Input Devices: The Keyboard (cont) <ul><li>Typewriter Keys: The standard alphabetic and numeric characters you would find ...
Input Devices: The Mouse <ul><li>The Mouse is a pointing device that rolls around on a flat surface and controls the locat...
Input Devices: The Mouse <ul><li>Mouse Functions (cont.) </li></ul><ul><li>Dragging: Holding down the mouse button and dra...
Other pointing devices <ul><li>Other pointing devices that control the on-screen pointer:  </li></ul><ul><li>Trackball: Th...
Other Pointing Devices (cont.) <ul><li>Joystick and wheel – Joysticks consists of a metal and plastic handle mounted on a ...
Cont. Other Pointing Devices
Other Input Devices <ul><li>Pointing stick:  A  pointing device  first developed by  IBM  for its  notebook computers  tha...
Cont. <ul><li>Graphic Table –is a computer  input device  that allows one to hand-draw images and graphics, similar to the...
<ul><li>Touch Display – Screens that contain pictures or shapes that the user can press to input that data. </li></ul><ul>...
<ul><li>Audio/voice input – Inputting sound and/or voice </li></ul><ul><li>- These usually require a microphone or a speci...
<ul><li>Scanners:  Devices that can convert a graphical image into a digital image and input it to the computer  </li></ul...
<ul><li>Digital Cameras: Used to take pictures and store them on a magnetic disk instead of  on film </li></ul><ul><ul><li...
<ul><li>Biometric Input: Uses fingerprint, face, handwriting, and voice for identification. </li></ul>
Magnetic Storage Devices <ul><li>Floppy Disks: Small, portable disks that hold a limited amount of data </li></ul><ul><li>...
Optical Storage Devices <ul><li>CD-DA: Audio CD </li></ul><ul><li>CD-R: This drive allows you to read and to write to a co...
<ul><li>CD-RW: Can be written on several times </li></ul><ul><li>DVD-ROM: Read-only DVD format </li></ul><ul><li>DVD-R: Si...
Solid State Storage Media <ul><li>Non-volatile removable media  </li></ul><ul><li>Miniature mobile media  </li></ul><ul><l...
Caring for Storage Media <ul><li>To safeguard your data from damage, follow these tips when dealing with removable media: ...
<ul><li>Tips for dealing with storage media (cont.) </li></ul><ul><li>- Write-protect important data. </li></ul><ul><li>- ...
Output Devices—Monitors  <ul><li>Monitors are used to display video output to a user. </li></ul><ul><li>Monitors may be mo...
<ul><li>Factors that influence the quality of a monitor </li></ul><ul><li>-Screen Size: The diagonal measurement in inches...
Output Devices—Printers <ul><li>Printers are used to create a hardcopy of a document or image. </li></ul><ul><li>- Printer...
<ul><li>The most popular types of printers are </li></ul><ul><ul><li>Laser:  Produce images using the same techniques as c...
Laser Printer
Ink Jet Printer
Other Types of Output Devices <ul><li>Speakers and headsets </li></ul><ul><li>Fax machines and fax modems </li></ul><ul><l...
Connecting I/O Devices to the Computer <ul><li>Input and output devices must be connected to the computer before they can ...
Thank you!!!  END
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Computer System Hardware Alyssa

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Computer System Hardware Alyssa

  1. 1. Computer System Hardware Output and Storage of the Computer
  2. 2. Objectives <ul><li>To learn the most commonly used input devices </li></ul><ul><li>To learn and know the most commonly used output devices. </li></ul><ul><li>Identify and storage devices. </li></ul><ul><li>Identify and describe how input and output devices are connected to the computer. </li></ul>
  3. 3. Input and Output Devices <ul><li>Input devices enable a user to input data and commands to the computer to be processed. </li></ul><ul><li>Output devices enabled the computer to give or show your results of its processing. </li></ul><ul><li>Some devices can perform both input and output operations. </li></ul>
  4. 4. Input Devices: Keyboard <ul><li>The Keyboard is the most widely used input device. </li></ul><ul><li>As you press keys on the keyboard, an electrical signal representing that key is sent to the computer. </li></ul><ul><li>Keyboard are divided into two sections. </li></ul>
  5. 5. Cont. Keyboard <ul><li>A keyboard is a human interface device which is represented as a set of buttons. Each button, or key, can be used to either input a linguistic character to a computer, or to call upon a particular function of the computer. Traditional keyboards use spring-based buttons, though newer variations employ virtual keys , or even projected keyboards . </li></ul>
  6. 6. Input Devices: The Keyboard (cont) <ul><li>Typewriter Keys: The standard alphabetic and numeric characters you would find on a typewriter </li></ul><ul><li>Function keys: Special keys that perform some specific function for the application being run </li></ul><ul><li>Numeric keypad: Used in mathematical operations </li></ul><ul><li>Directional keys: Used to move the cursor around the screen. </li></ul>
  7. 7. Input Devices: The Mouse <ul><li>The Mouse 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>The mouse performs the following functions: </li></ul><ul><ul><ul><li>Pointing: Placing the on-screen pointer at a specific place </li></ul></ul></ul><ul><ul><ul><li>Clicking: Pressing and releasing the mouse button. </li></ul></ul></ul><ul><ul><ul><li>Dragging: Holding down the mouse button and dragging an object to a new location by dragging the mouse. </li></ul></ul></ul>
  8. 8. Input Devices: The Mouse <ul><li>Mouse Functions (cont.) </li></ul><ul><li>Dragging: Holding down the mouse button and dragging an object to a new location by dragging the mouse </li></ul><ul><li>Double-clicking: Pressing and releasing the mouse button twice but very quickly </li></ul><ul><li>Right Clicking: Pressing the right mouse button </li></ul>
  9. 9. Other pointing devices <ul><li>Other pointing devices that control the on-screen pointer: </li></ul><ul><li>Trackball: This is like a mouse turned upside down. You roll a ball around with your finger to control the location of the pointer. </li></ul><ul><li>- These frequently are found on the notebook computers. </li></ul>
  10. 10. Other Pointing Devices (cont.) <ul><li>Joystick and wheel – Joysticks consists of a metal and plastic handle mounted on a base that you can move in any directions to move the pointer or other object. </li></ul><ul><li>- These are typically used in video games such as Nintendo Wii. </li></ul><ul><li>- Most buttons that can be pushed or clicked to control output/input. </li></ul>
  11. 11. Cont. Other Pointing Devices
  12. 12. Other Input Devices <ul><li>Pointing stick: A pointing device first developed by IBM for its notebook computers that consists of a miniature joystick , usually with a rubber eraser-head tip, positioned somewhere between the keys on the keyboard . Most pointing sticks are pressure-sensitive, so the pointer moves faster when more pressure is applied. </li></ul>
  13. 13. Cont. <ul><li>Graphic Table –is a computer input device that allows one to hand-draw images and graphics, similar to the way one draws images with a pencil and paper. These tablets may also be used to capture data or handwritten signatures. </li></ul><ul><li>- This is commonly used by the graphic artists we had today like the artists from cartoon movies. </li></ul>
  14. 14. <ul><li>Touch Display – Screens that contain pictures or shapes that the user can press to input that data. </li></ul><ul><li>Stylus/digital pen –Used in mobile devices in input data </li></ul><ul><li>Touchpad – Used mostly in laptop/notebook computers </li></ul>
  15. 15. <ul><li>Audio/voice input – Inputting sound and/or voice </li></ul><ul><li>- These usually require a microphone or a special voice recognition software to be installed on the computer. </li></ul>
  16. 16. <ul><li>Scanners: Devices that can convert a graphical image into a digital image and input it to the computer </li></ul><ul><ul><li>Types of scanners include </li></ul></ul><ul><ul><ul><li>Image scanners for scanning images and text </li></ul></ul></ul><ul><ul><ul><li>Bar code scanners to read product bar codes </li></ul></ul></ul><ul><ul><ul><li>Magnetic scanners to read the magnetic strip on a credit card </li></ul></ul></ul>
  17. 17. <ul><li>Digital Cameras: Used to take pictures and store them on a magnetic disk instead of on film </li></ul><ul><ul><li>Their images can be input directly into the computer. </li></ul></ul><ul><li>Video Input: Input camcorder or VCR using video capture cards </li></ul>
  18. 18. <ul><li>Biometric Input: Uses fingerprint, face, handwriting, and voice for identification. </li></ul>
  19. 19. Magnetic Storage Devices <ul><li>Floppy Disks: Small, portable disks that hold a limited amount of data </li></ul><ul><li>Hard Disks: Large-capacity and fast-access storage devices. </li></ul><ul><li>Zip Disks: Auxiliary storage devices that can hold large quantities of data and can be portable. </li></ul><ul><li>Magnetic Tape drives: Used for making system backups and storing large quantities of data. </li></ul>
  20. 20. Optical Storage Devices <ul><li>CD-DA: Audio CD </li></ul><ul><li>CD-R: This drive allows you to read and to write to a compact disk </li></ul><ul><li>CD-ROM: Can hold large amounts of data, but is read-only access </li></ul>
  21. 21. <ul><li>CD-RW: Can be written on several times </li></ul><ul><li>DVD-ROM: Read-only DVD format </li></ul><ul><li>DVD-R: Similar to CD, but holds more data; read only </li></ul><ul><li>DVD-RW: Can be written on several times </li></ul><ul><li>Photo-CD: Used for storing digital photographs on a CD. </li></ul>
  22. 22. Solid State Storage Media <ul><li>Non-volatile removable media </li></ul><ul><li>Miniature mobile media </li></ul><ul><li>- Uses Integrated Circuits </li></ul><ul><li>USB flash drive </li></ul>
  23. 23. Caring for Storage Media <ul><li>To safeguard your data from damage, follow these tips when dealing with removable media: </li></ul><ul><li>Keep away from magnetic fields </li></ul><ul><li>Avoid extreme temperatures. </li></ul><ul><li>Never try to disassemble the case. </li></ul><ul><li>Remove media from drive when not being used. </li></ul>
  24. 24. <ul><li>Tips for dealing with storage media (cont.) </li></ul><ul><li>- Write-protect important data. </li></ul><ul><li>- Hold optical disks at their edges. </li></ul><ul><li>- Never remove the media from the drive if the access light is on. </li></ul><ul><li>- Keep disks in a sturdy case when transporting them. </li></ul>
  25. 25. Output Devices—Monitors <ul><li>Monitors are used to display video output to a user. </li></ul><ul><li>Monitors may be monochromatic or color. </li></ul><ul><li>- Monochromatic monitors display output in a single-color display. </li></ul>
  26. 26. <ul><li>Factors that influence the quality of a monitor </li></ul><ul><li>-Screen Size: The diagonal measurement in inches of the display area </li></ul><ul><li>- Resolution: The number of pixels that that can be displayed in the displayed area. </li></ul><ul><li>- Dot Pitch: The distance between each pixel in the display area. </li></ul>
  27. 27. Output Devices—Printers <ul><li>Printers are used to create a hardcopy of a document or image. </li></ul><ul><li>- Printers vary by speed, quality, and price. </li></ul>
  28. 28. <ul><li>The most popular types of printers are </li></ul><ul><ul><li>Laser: Produce images using the same techniques as copier machines </li></ul></ul><ul><ul><li>Ink jet: Use fine nozzles to spray ink onto the page as the paper passes through </li></ul></ul><ul><ul><li>Dot matrix: 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>
  29. 29. Laser Printer
  30. 30. Ink Jet Printer
  31. 31. Other Types of Output Devices <ul><li>Speakers and headsets </li></ul><ul><li>Fax machines and fax modems </li></ul><ul><li>Multifunctional devices </li></ul><ul><ul><li>Contain a variation of output options </li></ul></ul><ul><li>Data projectors </li></ul>
  32. 32. 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>Connecting I/O devices to the computer: </li></ul><ul><ul><li>Plug the device into an existing socket or port on the back of the computer. </li></ul></ul><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>
  33. 33. Thank you!!! END

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