INFO 2

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ICT
use of technology for input, process, storage and transfer of data and the output of information.
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System
an activity that involves input, processing and output eg. working out someone's wages/
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ICT System
uses any form of digital technology, the output goes directly to a human being or into another system. It uses digital technology to input and process data eg. holiday booking system
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Input
information/data that is submitted into a system.
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Process
filtering the input of data to produce the relevant information.
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Output
results of the information produced when data has been processed.
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Data can be...
numbers/facts/figures, text, images (still or moving), sound, transactions
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Ways data can arise...
a) from a survey b) from the output of a Management Information System c) from a transaction d) from automatic measurement of environmental quantities e) from the results of an experiment
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Processing
performing calculations or arranging the data into a meaningful order.
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Transaction
a piece of business eg. an order, purchase, return, delivery, transfer of money etc
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American Standard Code for Information Interchange (ASCII)
a code for representing binary in characters.
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Binary Code
code made up from a series of binary digits, 0 or 1
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Coding
is about simplifying data to make entry easier and quicker eg M/F for male and female.
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Why is coding used?
it is used to allow fewer errors on the screen and it allows for easier analysis
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Encoding
is the process of putting information/data into a specified format.
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Why is encoding used?
it won't be understood by humans; only a computer will understood it. Its needed because the computer can only process information in binary code.
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Other cards in this set

Card 2

Front

an activity that involves input, processing and output eg. working out someone's wages/

Back

System

Card 3

Front

uses any form of digital technology, the output goes directly to a human being or into another system. It uses digital technology to input and process data eg. holiday booking system

Back

Preview of the back of card 3

Card 4

Front

information/data that is submitted into a system.

Back

Preview of the back of card 4

Card 5

Front

filtering the input of data to produce the relevant information.

Back

Preview of the back of card 5
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