Design & Technology
A system is a collection of parts that performs a function. A systems diagram is a representation of how a system will work. These are often used during the design process to generate ideas for electronic systems.
A simple systems diagram contains three boxes:
Each box in the system diagram has a specific function, and they are joined by a signal. Each box is normally a physical item: this could be a single component or a collection of components.
A complex system contains many inputs, processes and outputs. Some of these might form smaller systems - called 'sub-systems' - that work within the system. For example, the systems diagram for a car can have over 400 boxes and more than 10 sub-systems (including steering, braking, lighting etc).
Systems diagrams can be used to show how these different sub-systems relate to each other.
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