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Flashcards
Fichas del conjunto (12)
- 1What are the four ways in which data can be formed?Numbers
Words
Images
Sound - 2Name the five ways in which data can arise?An Experiment
A transaction
Output of a management information system
A survey
Measurements of environmental qualities - 3What is encoding Data?The process of putting data/information into a specified format that allows effective transmission or storage by an IT system
- 4Name the format that IT systems are only able to process?Binary Code
- 5Give one example of encoding and why this is done?ASCII encoding - Letters on a keyboard. This is to compress data to allow more storage space.
- 6What is decoding?The process of taking data out of a specified format so it can be understood.
- 7Name the types of sound files and explain themWAV - Not highly compressed - Windows
MIDI - Musical Instrumental Digital Interface - Compressed and quite small
MP3 - Reduces the file size considerably
Shockwave Audio - Very high quality - 8Name the 6 types of encoding imagesVector
JPEG
Bitmap
TIFF
GIF
WMF - 9Name the five ways data can be processed into informationCalculations
Making Decisions
Sorting
Organising
Grouping - 10Reliability of information is important, what is the quality of information measured on?How accurate it is.
How easy it is to understand.
How relevant it is.
How up to date it is. - 11Give an example where accuracy of information, easiness to understand, relevance and how up to date the information is, is neededAccuracy - On a credit card statement - people may complain if it is incorrect.
Easiness - personal information sent to a customer is coded (won't understand)
Relevance - Breaking down sales figures over 3 years (should do monthly)
Sell by date - NEEDS TO BE CORRECT! - 12Give one principle of the Date Protection Act 1998 and why it could be hard to make sure of itOut of date information - It is hard for companies to have all of the data up to date E.G. Moving house.
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- AS - Level ICT Fichas sobre Flashcards, creado por Oliver Mulcahy el 20/01/2016.
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- Oliver Mulcahy
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