0
Upcoming SlideShare
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Standard text messaging rates apply

# Edp111 Finalsproject

1,929

Published on

Published in: Technology
1 Like
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

Views
Total Views
1,929
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
95
0
Likes
1
Embeds 0
No embeds

No notes for slide

### Transcript

• 1. UNIT 1 COMPUTER BASICS LESSON 5 INPUT OUTPUT and STORAGE
• 2. OBJECTIVES  Identify and describe the most common output devices.  Identify and describe the most common input devices.  Identify and describe storage devices.  Identify and describe how input and output devices are connected to the computer.
• 3. INPUT AND OUTPUT DEVICES  Input devices enable a user to input data and commands to the computer to be processed.  Output devices enable the computer to give or show you the results of its processing.  Some devices can perform both input and output operations.
• 4. INPUT DEVICES- KEYBOARD  The Keyboard - is the most widely used input device. -As you press keys on the keyboard, an electrical signal representing that key is sent to the computer. -Keyboards are divided into sections.
• 5. EXAMPLE OF A KEYBOARD
• 6. INPUT DEVICES- KEYBOARD  Typewriter keys: The standard alphabetic and numeric characters you would find on a typewriter.  Function keys: Special keys that perform some specific function for the application being run.  Numeric keypad: Used for mathematical operations.  Directional keys: Used to move the cursor around the screen.
• 7. INPUT DEVICES- MOUSE  The mouse is a pointing device that rolls around on a flat surface and controls the location of the pointer on the screen.
• 8. INPUT DEVICES- MOUSE  The mouse performs the following functions: – Pointing: Placing the on-screen pointer at a specific place – Clicking: Pressing and releasing the mouse button
• 9. INPUT DEVICES- MOUSE – Dragging: Holding down the mouse button and dragging an object to a new location by dragging the mouse – Double-clicking: Pressing and releasing the mouse button twice very quickly – Right-clicking: Pressing the right mouse button
• 10. Other Pointing Devices  Other devices that control the on-screen pointer: -Trackball: This is like a mouse turned upside down. You roll a ball around with your fingers to control the location of the pointer. -These frequently are found on notebook computers.
• 11. EXAMPLE OF A TRACKBALL
• 12. Other Pointing Devices (cont.) -Joystick and wheel: Joysticks 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. -These typically are used for video games. -Most have buttons that can be pushed or clicked to control input/output.
• 13. EXAMPLE OF A JOYSTICK & WHEEL
• 14. Other Pointing Devices (cont.) -Pointing stick: A pressure-sensitive device that resembles a pencil eraser; found mostly on notebook computers -Graphics tablet: A flat drawing surface connected to the computer -The user draws on the surface, and the figures or writing on the tablet can be input to the computer for processing
• 15. EXAMPLE OF A GRAPHICS TABLET
• 16. Other Pointing Devices (cont.) -Touch display: Screens that contain pictures or shapes that the user can press to input that data -Stylus/digital pen: Used with mobile devices to input data -Touchpad: Used mostly in laptop/notebook computers
• 17. EXAMPLE OF A TOUCH DISPLAY
• 18. EXAMPLE OF A DIGITAL PEN
• 19. EXAMPLE OF A TOUCHPAD
• 20. Other Pointing Devices (cont.) -Audio/voice input: Inputting sound and/or voice. – These usually require a microphone and special voice recognition software to be installed on the computer.
• 21. EXAMPLE OF AN AUDIO/VOICE INPUT
• 22. Other Pointing Devices (cont.)  Scanners: Devices that can convert a graphical image into a digital image and input it to the computer – Types of scanners include Image scanners for scanning images and text Bar code scanners to read product bar codes Magnetic scanners to read the magnetic strip on a credit card
• 23. EXAMPLE OF A SCANNER
• 24. Other Pointing Devices (cont.)  Digital cameras: Used to take pictures and store them on a magnetic disk instead of on film – Their images can be input directly into the computer.  Video input: Input from a camcorder or VCR using video capture cards
• 25. EXAMPLE OF A DIGITAL CAMERA
• 26. Other Pointing Devices (cont.)  Biometric input: Uses fingerprint, face, handwriting, and voice for identification
• 27. Magnetic Storage Devices  Floppy disks: Small, portable disks that hold a limited amount of data  Hard disks: Large-capacity and fast-access storage devices
• 28. Magnetic Storage Devices (cont.)  Zip disks: Auxiliary storage devices that can hold large quantities of data and can be portable  Magnetic tape drives: Used for making system backups and storing large quantities of data
• 29. Optical Storage Devices  CD-DA: Audio CD  CD-R: This drive allows you to read and to write to a compact disk.  CD-ROM: Can hold large amounts of data, but is read-only access.  CD-RW: Can be written on several times  DVD-ROM: Read-only DVD format  DVD-R: Similar to CD, but holds more data; read- only  DVD-RW: Can be written on several times  PhotoCD: Used for storing digital photographs on a CD
• 30. Solid-State Storage Media  Non-volatile removable media  Miniature mobile media – Uses integrated circuits  USB flash drive – Connects to the computer via a USB port
• 31. Caring for Storage Media  To safeguard your data from damage, follow these tips when dealing with removable media: – Keep away from magnetic fields. – Avoid extreme temperatures. – Never try to disassemble the case. – Remove media from drive when not being used.
• 32. Caring for Storage Media (cont.)  Tips for dealing with storage media (cont.) – Write-protect important data. – Hold optical disks at their edges. – Never remove the media from the drive if the access light is on. – Keep disks in a sturdy case when transporting them.
• 33. Output Devices—Monitors  Monitors are used to display video output to a user.  Monitors may be monochromatic or color. – Monochromatic monitors display output in a single-color display.
• 34. EXAMPLE OF A MONITOR LCD monitor PLASMA monitor
• 35. Output Devices—Printers  Printers are used to create a hard copy of a document or image. – Printers vary by speed, quality, and price  The most popular types of printers are – Laser: Produce images using the same techniques as copier machines
• 36. Output Devices—Printers (cont.) – Ink jet: Use fine nozzles to spray ink onto the page as the paper passes through – 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
• 37. EXAMPLES OF PRINTERS LASER INKJET DOTMATRIX
• 38. Other Types of Output Devices  Speakers and headsets  Fax machines and fax modems  Multifunctional devices  Data projectors
• 39. Connecting I/O Devices to the Computer  Input and output devices must be connected to the computer before they can be used.  Connecting I/O devices to the computer: – Plug the device into an existing socket or port on the back of the computer. – Install an expansion card with the port you need included on the back of the card. – Connect wirelessly.
• 40. Summary  Input devices enable you to input data and commands into the computer.  The most common input devices are the keyboard and mouse.  Other types of input devices include trackball, joystick and wheel, pointing stick, graphics tablet, touch display screen, stylus, voice recognition devices, touchpad, scanner, digital camera, video input, and biometric input.
• 41. Summary (cont.)  To maintain a permanent copy of data, you should store it on some type of storage medium.  The three categories of storage media are magnetic storage, optical storage, and solid-state storage.  Monitors and printers are examples of output devices.
• 42. Summary (cont.)  Monitors produce soft copy.  Printers are used to produce a paper or hard copy of the processed result.  Criteria for selecting a printer include speed, print quality, and cost.  Input and output devices must be physically connected to the computer.
• 43. Summary (cont.)  Some input devices communicate with the computer through a physical connection.  Wireless devices communicate with the computer through infrared or radio waves.
• 44. PHOTOS CURTESY OF YAHOO IMAGES