Input,output and storage devices

Input,output and storage devices

1. Input devices

   • Mouse
     • works by using a light source ,typically an LED and a light detector
   • keyboard
     • works by a little electrical switch under the keyboard
   • Chip and pin
     • works by the gold or silver metilic card in the corner of your card
   • optical pen
     • works by a electric circuits
   • Joy stick
     • works by taking something entirely physical , then translating it into something mathematical
   • Track ball
     • By using optical sensor to read the movements of the dots
   • scanner
     • works by the light passing through the scanner lens and reaches the CCD sensors
   • camera
     • works by a lightproof box that lets a bit of light at the right time
   • microphone
     • works by converting energy from one to another
   • touch screen
     • works by a electric circuit that conducts electrodes separated by an insulated gap

2. Output devices

   • 3D Printer
     • works by The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the entire object is created.
   • Speaker
     • works by When a fluctuating electric current flows through the coil (orange), it becomes a temporary electromagnet, attracted and repelled by the permanent magnet (blue/red)
   • TV screen
     • works by 3 electric beams Each electron beam is directed by a grid to land on a phosphor of the same colour. That way you have three different colours to mix.
   • Headphones
     • works by Large headphones are essentially just two loudspeakers mounted on a strap that clamps firmly over your head
   • Projector
     • works by In an LCD TV projector, a very bright light shines through a small LCD screen into a lens, which throws a hugely magnified image of the screen onto the wall.
   • monitor
     • works by liquid crystal displays
   • plotter
     • works by By moving a pen mechanically, plotters draw line art onto the surface of the paper to reproduce vector graphics drawn on a computer
   • motor
     • works by AC motors work a slightly different way they pass alternating current through opposing pairs of magnets to create a rotating magnetic field, which "induces" (creates) a magnetic field in the motor's rotor, causing it to spin around
   • webcam
     • works by capturing light from the front of the lense

3. storage device

   • Flash drive
     • works by using storing you files
   • SIM Card
     • sim cards work by storing data
   • floppy disk
     • when you insert the floppy disk into the drive the shutter moves to the side to expose the magnetic recording surface on the disk
   • zip disk
     • works by transferring files from computer to computer
   • smart cards
     • works by connecting to a reader with direct physical contact or remote contactless radio freequency interface

Bilder und Dateien der Mindmap