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24 Cards in this Set
- Front
- Back
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What is Data?
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Data consists of raw facts and figures. It is usually a series of values produced as a result of an even or transaction.
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Examples of Data?
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Barcode Number E.G 060042350032
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Data capture means the collection of data to enter into a computer. Their are 8 ways to input data, list them.
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1.Use of keyboard
2.Speech recognition 3.Use of webcam 4.Use of touch screen 5.Selection from listusing mouse 6.Use of sensors 7.Use of barcode reader 8.Transfer of pre-captured data from an external device i.e camera |
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What is Information?
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Information is data that has been processed by the computer. The data has a context and has been turned into a useable form which makes it understandable to the user.
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Examples of information?
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Barcode being scanned at a till, it looks up the name and price then calculates the amount you need top pay.
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What is Knowledge?
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Knowledge is derived from information by applying rules to it. Knowledge is the ability to make sense of information so that it can be used effectively. Knowledge is the interpretation of information.
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Examples of Knowledge?
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When give a chart showing monthly sales figures for different products the decision to discontinue a product can be made from the information because combined with the experience it has become knowledge.
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Problems with encoding data?
Name 2 |
1.The loss of precision when encoding data.
2. Value judgements are based on peopls personal views. |
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Advantages of encoding data?
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1. Fewer transcription errors.
2. Less time spent on data entry. 3. Greater data consistency. 4. Less memory required. |
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List 4 factors of good quality information.
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Accurate, Up to date, Complete and Reliable.
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What are the costs of getting good quality information?
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Financial costs
Time Consuming Human-resource costs. |
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Define Accurate.
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How accurate information needs to be depends upon how it will be used.
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Why is it important to have good information?
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It can add value to organisations by:
1.Aiding decision making 2.Monitoring progress 3.Allowig the targeting of resources 4.Giving a competitive advantage |
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Ensureing that information is high quality is costly, These costs can be in terms of?
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1.Money
2.Time 3.Human Resources |
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Their are 2 important ways to find information, these two main methods can include?
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1. Electronic methods
2. Non-electronic Methods |
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Electronic methods can include a variety of different ways, these ways can include?
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1. Keyword search
2. Virtual Tours 3. E-mail 4. Bulletin Boards (Forums) 5. Software encyclopedias (online or cd rom) 6. Chat rooms 7. Teletext. |
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Non electronic ways to find information?
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1. Books
2. Magazines 3. Newspapers |
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The information produced by a system is only as good as the quality of the data that is input, this isk now as?
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GIGO
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Problems with having data errors?
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They have far reaching effects
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Errors can occur when data is?
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1.Captured
2.Transcribed 3.Transmitted 4.Processed |
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How can you reduce errors?
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1.Verification Checks
2.Validation checks 3.Thorough analysis 4.Thorough testing |
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Data that is valid may not be accurate or correct, give an example.
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In a form asking for age I could put an age down that is within the boundries but not true e.g Put I'm 15 when I'm 16, this data is valid but not accurate or correct.
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ICT systems have what advantages over manual methods for processing data?
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1.Repetitive processing
2. Speed of processing 3. Vast storage capability 4. speed of searching for data 5. Greater accuracy and speed of data communication 6. Abilitiy to produce different output formats. |
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There are a number of factors affecting the efficiency of data processing systems, including?
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1.Hardware
2.Software 3.Suitability of operating system 4.Communications 5.Input |
