computer systems

computer systems

1. INPUT devices

   • Keyboard- as you press each key, it allows the user to enter data by clicking on each key.
   • Mouse- as you click on an icon your computer, the input data from the mouse is sent to the microprocessor which then causes the icon to be opened.
   • Touch screen- the touch screen picks up the movement that your finger makes on the surface and produces input data which the computer system can act upon.
   • Microphone- the microphone system picks up sound waves and converts them into digital input data via the sound chip or sound card.

2. OUTPUT devices

   • Headphones- head phones are output devices because it plays the music through them and not out of the speakers.
   • Braille reader- a braille reader would read the sentence/word by sensing the dots or indents and translate it into words
   • 3D printer- you would type something into the computer which would then send a signal to the printer telling it to print a certain object
   • Projector- a projector has signals sent to it from the computer and displays whatever is on the computer screen

3. STORAGE devices

   • CD-Data is burned onto the surface of the CD using a laser in the CD drive. A laser beam is also used to read the data stored on the disk.
   • DVD- a DVD is a storage device because information is stored on it which can then be turned into a picture or video when in a DVD player.
   • Hard drive- hard drives are storage devices because they hold important/useful information
   • USB stick- a USB stick is a data storage device that includes flash memory and holds documents.

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