Input ,output and storage devices

Input ,output and storage devices

1. Input devices

   • Microphone
   • Keyboard
     • A keyboard key acts as a switch wich completes a circuit wich the computer turns to letters on a moniter.
   • Pressure pad
   • Mouse
     • A computer mouse uses a light source ( typically an LED) and a light detector such as photodiodes to proccess movement.
   • Camera
     • Webcam
       • Webcams actively feed data to the computer unlike a didgital camera.
     • CCTV
   • Controller
     • Each button is a switch that completes a circuit when pressed. Once the button is pressed it sends the relevant data to the system.
   • Joystick
   • Steering wheel
     • The system allows a driver to use only light forces to steer a heavy car.If the driver swivelled the road wheel directly, he or she would have to push nearly 16 times as hard.
   • Control pad

2. Storage devices

   • Memory chip
   • Hard drive
   • Credit card
   • CD
     • CD data is represented as tiny indentations known as "pits", encoded in a spiral track moulded into the top of the polycarbonate layer. The areas between pits are known as "lands". A disc played from beginning to end slows its rotation rate during playback.
   • DVD
     • Digital versatile discs (DVDs) can store more information than compact discs (CDs) because they have smaller pits, placed closer together. It is the pattern of these pits burned onto a disc's surface that encodes the 1's and 0's a player translates into sound and/or images.
   • USB stick
     • A flash drive consists of a small printed circuit board carrying the circuit elements and a USB connector, insulated electrically and protected inside a plastic, metal, or rubberized case which can be carried in a pocket or on a key chain, for example.

3. Output devices

   • Speaker
     • It uses fluctuating electro magnet to make the sound waves.
   • Screen
     • Pixel
   • Printer
     • It makes a laser beam scan back and forth across a drum inside the printer, building up a pattern of static electricity. The static electricity attracts onto the page a kind of powdered ink called toner. Finally, as in a photocopier, a fuser unit bonds the toner to the paper
   • Projector
   • Drone
     • A vehcicle withought a person in it, commonly known as a drone, as an unmanned aircraft system , or by several other names, is an aircraft without a human pilot aboard. The flight of them may operate with various degrees of autmation: either under remote control by a human operator, or fully or by itself, by onboard computers.
   • Computer fan
   • Train
     • A train is a form of rail transport consisting of a series of vehicles that usually runs along a rail track to transport cargo or passengers. Motive power is provided by a separate locomotive or individual motors in self-propelled multiple units.
   • Plane
   • Headphones
   • Lazer cutter
     • laser cutters intake instructions from the computer as binary then use them so they know were to put the laser cutter.
   • Electrical heating
     • An electric heater is an electrical device that converts electric current to heat. The heating element inside every electric heater is an electrical resistor, and works on the principle of Joule heating: an electric current passing through a resistor will convert that electrical energy into heat energy
   • pin card reader
     • A merchant account works as a link between your Chip & PIN card machine and your business account. When a payment is put through your Chip & PIN terminal, it is processed through the merchant account.