; Input_ Storage_ and Output Devic
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Input_ Storage_ and Output Devic


  • pg 1
									Input, Storage, and Output Devices
Input= Enables data, or instructions, to be
  entered in to the computer.
Input device= Enables you to input data and
  commands into the computer.
Ex: keyboard, mouse, touch screen.
Output Device= enables the computer to
  give you the results of the processed data.
Ex: monitor, printer
                      Input Devices
Keyboard=Is the most commonly used input device for entering numeric and
   alphabetic data into a computer.
                              Special features:
Ergonomic: A keyboard designed to provide, user with more natural,
   comfortable hand, wrist, and arm position.
Cordless: Mouse has no cord.
Security= Some come with a biometric fingerprint reader, and magnetic stripe
   and card reader.
            Pointing Device
Pointing Device moves, around on a flat surface
   and controls the pointer on the screen.
Mouse= Most commonly used pointing device for
   personal computer.
             Different Types Of Mouse
1. Optomechanical= Uses a small orb underneath
   the mouse.
2. Optical= Uses laser to detect the mouse
3. Cordless= Does not use a cord relies on
   infrared or radio waves.
            Continue Mouse
You use the mouse to accomplish the following
 Pointing: Placing the pointer at designated
 Clicking= Pressing and realizing the mouse
 Dragging: Pressing down the mouse button and
  moving the mouse while continuing to hold
  down the button.
 Right-clicking= Pressing the right mouse button.
            Other Input Device
   Touch display screen= allows you to input
    information on to the computer, by touching the
    screen, which also serves as output device. This
    device is commonly used in retail stores.
   Audio Input =Inputting voice by the use of
    special microphone.
   Voice recognition= device are used to “speak” –
    commands through the use of microphone.
Scanners are device that can change image into
  electronic form that can be stored in a
  computer’s memory.
 Image scanners: Converts images to electronic
  form that can be stored and manipulated.
 Bar code scanners= reads bar line.

 Magnetic Scanners: Reads encoded information
  on the back of credit cards. The magnet code on
  back of the card contains encoded user’s
  account number.
Digital Camera and Video Input

Digital camera= are stored digitally and then can
  be transferred in to the computers memory. The
  images can be stored in a floppy disk, flash
  memory card, memory stick, and mini-disk.

Video input is the process of capturing full-motion
  images with a type of video camera and then
  saving the video on a storage medium such as a
  hard drive, CD, or DVD. After it is saved, you
  can view and edit.
                     Biometric Input
   Biometric is authentication
    technique using automated
    method of recognizing a
    person based on physiological
    or behavioral characteristic.
    Some of the more common
    identification techniques are
    finger print, face, handwriting,
    and voice, and looking at the
    retina found in the eye.
    Different Types of Storage Device
   Floppy disk, is a flat
    circle of iron oxide-coated
    plastic enclosed in a hard
    plastic that measures
    about 3 ½ inches and
    has a capacity to hold
    1.44MB, or more data.
    This device is know
   Hard Disk, are used to
    store data inside the
    computer, although some
    removal hard disk can be
    found externally from the
              Storage Device
Magnetic Storage Device
Magnetic storage device use
  oxide-coated plastic
  storage media called
  Mylar.A device called a
  an electromagnetic
  read/write head stores or
  retrieves data in circles
  called tracks. Tracks are
  numbered based on a file
  allocation system.
                     More Storages
   Optical Storage, device use
    laser technology to read and
    write data on a silver platters.
    The term disk is used for
    optical media. CDs and DVDs
    are a type of optical storage
   CD0DA
   CD-R
   CD-ROM
   CD-RW
   DVD-RW
      Solid-State Storage Media
   Solid-state storage, is
    a nonvolatile
    removable medium in
    which everything is
    electronically, and
    thus contains no
    mechanical parts.
   A popular solid-state
    storage medium is the
    USB Flash drive.

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