data & information

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What is data and what forms can it take?
Raw facts and figures. It can take a form of images, numbers, text, sound.
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Name 5 ways in which data can arise.
1. From the result of an experiment. 2. From automatic measurement of environmental quantities. 3. From a survey. 4. From a transaction. 5. From the output of a management information system.
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What are the reasons for encoding your data?
It takes less effort to type in, more data can appear on the screen, takes up less storage space, easier to use validation checks.
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Name an example of encoding.
ASCII encoding - letters, numbers are changed into a series of binary digits.
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What is information?
Information comes from the processing of data. People or computers can find patterns in data which gives them information and the information enhances their knowledge about the subject. Information is data that has been processed
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What`s the difference between information and data?
Data are raw facts and figures and they become information after they have been processed.
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What is an ICT system?
An ICT system is an input of data, processing and output of information. It also includes people, hardware, software and communication between them.
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Name 6 components of an ICT system.
People, data, information, hardware, software, procedures.
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What is useful information?
Accurate information, easy to understand, relevant, up-to-date.
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Why is it important to keep data up to date?
Because old information might not be relevant and it is required by the Data Protection Act.
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Name at least 2 types of encoding used for images.
1. GIF 2. JPEG 3. TIFF 4. Vector
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Other cards in this set

Card 2

Front

1. From the result of an experiment. 2. From automatic measurement of environmental quantities. 3. From a survey. 4. From a transaction. 5. From the output of a management information system.

Back

Name 5 ways in which data can arise.

Card 3

Front

It takes less effort to type in, more data can appear on the screen, takes up less storage space, easier to use validation checks.

Back

Preview of the back of card 3

Card 4

Front

ASCII encoding - letters, numbers are changed into a series of binary digits.

Back

Preview of the back of card 4

Card 5

Front

Information comes from the processing of data. People or computers can find patterns in data which gives them information and the information enhances their knowledge about the subject. Information is data that has been processed

Back

Preview of the back of card 5
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Comments

Mr A Gibson

As a revision tool for the basic points relating to data and information this is accurate and useful for a "quick check". Ask a friend to test you on these from your mobile device! 10 minutes well spent... repeat and repeat!

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