Input,Output and Storage Devices

Input,Output and Storage Devices

1. Input Devices

   • mouse
     • It uses a light source to detect the movement on the surface.
   • Keyboard
     • In each key of the keyboard has a little electrical swich under it. So when you click a key it sends the data from the keyboard to the computer and then shows what you have typed on the screen.
   • Microphone
     • It converts energy from one form to another. They convert sound waves into the audio signal.
   • Trac Pad
     • There is a censor underneith the panel that controls the mouse and moves it
   • Sat-nave
     • It has a satellite navigation signal that sends connection through the satellite signal to the sat nav.
   • Pin machine
     • A pin machine works by it sending a translation in through the machine that reads the card.
   • Web Cam
     • There is a USB port that connects through the web cam to the computer or device.
   • TV remote
     • There is a transmitter that is built into the top of threremote that sends the data through to the tv
   • scanner
     • The light goes through the scanner lens and then the machine gets the data. Then the light reflects through the image and then converts it into the scanner and scan it.
   • joystick
     • They have a digital hand sencer in the device that sends the data intp the device that you are playing on to make the game or anyone you are playing on move.
   • Bar code scanner
     • There is a sensor in the bar code scanner that reflects a light and then sends the data to the machine.

2. Output Devices

   • Sat-nav
     • It uses global signal from a satellite to the Sat Nav , also global positioning system that helps you where to go.
   • Printer
     • The printer has a electricity scan that goes from your device to the printer through a signal.
   • Laptop screen
     • A laptop screen works by you clicking a button and then its sends data through the pixels, the data to the screen and then it appears.
   • Cash machine
     • It works by the person putting in their pin and then sending the data to the machine so the data shows on the screen.
   • TV
     • it works by the remote control or buttons on the tv sending a signal to chance the channel, pausing, playing or anything else.
   • Headphones
     • Headphones work by a magnet getting the song and sending it up the cables back up to the device.
   • Speakers
     • Speakers work by having a signal that sends a sound wake out through the speaker that produces sound out of the speaker.
   • controller
     • A controller works by the signal from the controller getting sent to the device.
   • Traffic lights
     • There are sensors buried in the road to detect the presence of the traffic waiting at the light, and thus can reduce the time when a green signal is given to an empty.
   • WiFi
     • There is a signal that gets carried round and when you are close enough the signal will pop up on your device

3. Storage

   • Memory card
     • They work by you plugging the drive into your computer and then sending the pictures from your computer to your memory stick to store the data.
   • Chip
     • A computer chip works by storing information which central processing unit, of the computer and then distributed to the monitor or printer.
   • Disc
     • a laser beam is focused onto the surface of a spinning compact disc lands on the disc surface affect how light is either scattered by the disc surface or reflected back into a detector.
   • bar code scanner
     • There is a sensor in the barcode scanner that detects the reflected light from the object you are scanning, reads it and then sends the data to the screen.
   • Hardrive
     • A small hard drive typically has only one platter, but each side of it has a magnetic coating. The platters rotate at up to 10,000 revolutions per minute.
   • WI FI
     • WI FI is used by a satellite signal coming to your device and then coming up on you WI FI box.

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