A model is a representation of some aspect of the real world. A simulation is the use of that model. Modelling and simulation systems involve the use of computers as systems that enable people to simulate a real situation.
13.1 Hardware
Simulators are devices used for experiments and training. Fight simulators help train pilots. Analogue to digital converters are needed for digital computers to process data. Analogue computers do not need the D/A converters and can accept the input from peripheral devices in the analogue form. To enable fast processing processors can be put in parallel with the calculation task being divided up into smaller tasks.

Write out the sentence and fill in the missing word
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A ????? is a representation of some
aspect of the real world. |
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A ????? is the use of that model. |
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Modelling and simulation
systems involve the use of ????? as
systems that enable people to simulate a real situation. |
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Hardware in
modelling and simulation systems must have the ability to perform
computations ????? . |
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Simulators are
devices for ????? and
experiments to simulate movement, flight or some other condition. |
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????? have become an effective way to train pilots. |
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A/D converter is a
device that converts analogue signals into a ????? signal. |
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Data in a ????? device such as a simulator is
often in analogue form. |
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An ????? computer is a device that
processes analogue data. |
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????? is
the use of several processors to share the calculations of a large task. |