INPUT AND OUTPUT ( input )

INPUT AND OUTPUT ( input )

1. INPUT

   • explan: - data / instructions used by computer
     • example devices:
       • 1. Keyboard Entry
         • 1.1 traditional keyboard (used in dekstop computer )
         • 1.2 laptop keyboard ( attach to the laptop )
         • 1.3 virtual keyboard ( ipad )
         • 1.4 thumb keyboard (widely used in smartphone ) ( blackberry)
       • 2. Pointing devices
         • 2.1 MOUSE
           • #1 OPTICAL (emits + sense light beam to detect muse mvement
           • #2 WIRELESS (not connected to wire
           • #3 MECHANICAL
           • #4 TOUCH PAD ( by tapping finger )
         • 2.2 TOUCH SCREEN
           • by tapping finger used multiple finger ( pinching and stretching )
         • 2.3 GAME CONTROLLER
           • JOYSTICK (control speed, pressire)
           • DANCE PAD (sensitive to pressure and a sensitive map )
           • GAMEPAD(control movement)
         • 2.4 STYLUS
           • use pen -like matter (use pressure to draw pictures on display screen )
       • 3. Scaning Devices
         • 3.1 Optical Scaner
           • Flatbed scanner ( must be scan on flat mirror )
           • Portable scanner (lighter , make direct contact to the paper that we want to scan(
           • Doc. scanner ( ultiple pages at one time )
         • 3.2 BAR CODE READER
           • 1. UPCs ( to change price , used fo inventory)
           • 2. Maxi code ( for tracking parcel)
           • 3. QR codes (provide informations for consumer)
         • 3.3 CARD READER ( contain thin magnetic strip that contain encoded information such as id number )
         • 3.4 RFID READER ( contain tiny chips that have information ) ( F : to track lost pet , to track and locate people sing passport )
         • 3.5 CHARACTER AND MARK RECOGNITION DEVICE )
           • OMR (OPTICAL MARK RECOGNITION ) ( F: detect black shaded)
           • OCR ( OPTICAL CHARACTER RECOGNITION ) ( use special peprint character (QR CODES)
           • MICR ( MAGENTIC INK CHARACTER RECOGNITION ) (use i bank to scan unusual numbers at the bottom of check .
       • 4, IMAGE CAPTURING DEVICE
         • 1. DIGITAL CAMERA ( capture images digitally and store it in memory card )
         • 2. WEBCAMS ( specializ digital camera that capture image and broadcast in in the internet )
       • 5. AUDIO INPUT DEVICES
         • 1. VOICE RECOGNITION SYSTEM ( detect voice and convet it into a form that comp can understand )