The Circuit Boards
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Simple machines

Compound machines

Circuit boards

 The Radio Circuit

The Radio Reflection

The Billy cart Blueprint


Circuit boards are usually use in almost all eletronic machines that are found. You can't see the circuit board because, you have to screw the screws out and open this eletronic machine to see the circuit board in the machine. Here are some examples.

A computer has a motherboard.

A digital clock has it's own type of circuit bard.

And so on.