Drawings are another kind of language engineers use to encode many subtle physical relationships in a system of drawing symbols. For example I generate many electronic circuit diagrams. Then printed circuit board diagrams show the precise physical shape, size, and forms that implement the information in the circuit diagrams. Then mechanical assembly diagrams must be used to assemble the physical parts and components into a working device. So, you can now see that electrical engineering uses several languages working together to organize and analyze and document all of the different kinds of information.
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