Data Coding Systems

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Flashcards on data coding systems.
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What does ASCII stand for? American Standard Code for Information Interchange
What is ASCII A standard binary coding system for characters and numbers.
What is a unicode? A standard binary coding system that has superseded ASCII.
What is a Parity Bit? A method of checking binary codes by counting the number of 1s and 0s in the code.
What is Majority Voting? A method of checking for errors by producing the same data several times and checking it is the same each time.
What is a Check Digit? A digit added to the end of binary data to check the data is accurate.
Bit-mapped graphic An image made up of individual pixels.
Pixel. An individual picture element.
Resolution? width x height or pixels per inch.
Colour Depth? the number of bits or bytes allocated to represent the colour of a pixel in a bit-mapped graphic.
Vector Graphic? an image made up of objects and coordinates.
Compression? the process of reducing the number of bits required to represent data.
Run-length encoding? A method of compressing data by eliminating repeated data.
Dictionary-based encoding? A method of compressing text files.
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