DATA AND INFORMATION- coding and encoding

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Types of data?
Numeric, alphanumeric, image, audio.
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What is data?
Data are details that are meaningless because they lack relevance.
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Ways in which data can arise?
Results of an experiment, automatic measurements of environmental quantities, surveys, transaction, output of a management information system.
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Coding Data?
Data is often coded during collection or when input into an ICT system.
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Reasons for coding data?
coded data takes less effort to type in, more data can appear on screen, takes up less storage space, easier to check that code is accurate with validation checks.
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What is encoding data?
the process of putting data/information into a specified format that allows effective transmission or storage by an ICT system.
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How do ICT systems process data?
Binary coding
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What is Binary code?
0's and 1's
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What is ASCII encoding?
where characters on a keyboard are coded (e.g. letters, numbers, and punctuation) for example a=01000001
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Reasons for encoding?
To compress data, enable a file produced in one software package to be read by someone who doesn't have that software package available on their computer.
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Encoding image files?
JPEG, GIF, vector, Bitmapped, TIFF, WMF
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Encoding sound files?
WAV, MDID, MP3, Shockwave Audio
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Other cards in this set

Card 2

Front

What is data?

Back

Data are details that are meaningless because they lack relevance.

Card 3

Front

Ways in which data can arise?

Back

Preview of the front of card 3

Card 4

Front

Coding Data?

Back

Preview of the front of card 4

Card 5

Front

Reasons for coding data?

Back

Preview of the front of card 5
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