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Minimalist Electronic Design

Every electronic components always have at least 2 connectors: an input to collect the electrons and an output to release them.

A working electronic system needs at least a closed circuit between a power source such as a battery, and another element that will react to the energy flow, such as a light or a buzzer.

We usually used wires and connectors to properly connect the elements, and we preferably add another element called an interrupter to easilly disconnect the power source for safety reason: one should never leave a closed circuit when not using it.