Devices

Devices

1. OutPut

   • Printer
     • It makes a laser beam scan back and forth across a drum inside the printer, building up a pattern of static electricity.
   • projector
     • 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.
   • speakers
     • How a loudspeaker works. When a fluctuating electric current flows through the coil (orange), it becomes a temporary electromagnet, attracted and repelled by the permanent magnet (blue/red).
   • headphones
     • Large headphones are essentially just two loudspeakers mounted on a strap that clamps firmly over your head.

2. Input

   • Keyboard
     • Each key on the board has a little electrical switch under it. When you press a key (1), its switch completes a certain electrical circuit (2).
   • controller
     • The controller is the primary user interface for the PlayStation. And just as the gamepad that came with the original Nintendo Entertainment System was a radical departure from previous controllers, the PSX controller changed the rules again.
   • webcam
     • A webcam is a compact digital camera you can hook up to your computer to broadcast video images in real time (as they happen).
   • microphone
     • Microphones are a type of transducer - a device which converts energy from one form to another. Microphones convert acoustical energy (sound waves) into electrical energy (the audio signal).

3. processing

   • Laptops
     • A laptop works with a power cable, which is used to charge the battery, and the keyboard is integrated into the computer, using a touch pad as a mouse.
   • computers
     • The computer does its primary work in a part of the machine we cannot see, a control center that converts data input to information output.
   • Sound card
     • Most of your music collection is probably in digital format, either on CDs or as files on your computer.
   • Network Card
     • Just like any other expansion card (e.g. Video card, Sound card, etc.) the network interface card must also be inserted into an open and available slot on your computer’s motherboard.

4. Storage

   • USB stick
     • USB stick They are smaller, faster, have thousands of times more capacity, and are more durable and reliable because they have no moving parts.
   • dvd/ cds
     • Dvd/cds work by storing data ie movies inportant information ect
   • PC card
     • It was originally designed as a standard for memory-expansion cards for computer storage.
   • media devices
     • midia devices works by storing data so your phone wont run slowly

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