When the switch is tuned off, the circuit is open so the electrical energy stops flowing. Circuit symbols are really useful when designing the electrical circuits inside the things we use.

So many of the symbols and icons we use every day are learned without ever knowing the meanings behind them. We just go about our days, pressing and clicking on buttons, without a second thought ...

Apple In combining the 1 and 0 together, the power symbol was born: a large circle (0) interrupted by a small vertical line (1). This language-agnostic design was meant to convey that a switch or ...