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Summary Notes for a Mock Exam

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Notes that were taken to prepare for a Mock Exam.

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  • October 31, 2021
  • 1
  • 2019/2020
  • Summary
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 DAB – Digital Audio Broadcasting, converts audio broadcasts into digital signals
 Mainframes – type of high-performance computer that is large, has lots of memory and can
handle transactions.
 Mobile devices – 1990 mobile phones start as a piece of tech that is available to the public
o 2 types apps
 Native app
 The app is written for the specific device and cannot be translated
on to other devices
 Web app
 The app works on browsers rather than the device, this could make
the app run slower
o Dangers
 Increase the risk of cancer
 Risk to children’s development
 Entertainment systems – multifunctional devices (MFD’s) that can make sound and video
 Digital Cameras – can capture two different types of images
o Still
 Images that don’t move otherwise known as photos
o Video
 Moving images which are made from a series of frames to make a video
 Data Capture – known as electronic data capture such as a credit card or finger print
recognition
 GPS – Global Positioning System, uses the signals from orbiting satellites to work out the
position of the device.

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