Slide 1 of 2, A circuit symbol diagram joining a cell, a switch and two bulbs., This circuit diagram joins a cell, a switch and two bulbs. Click on the next slide to see what the circuit might ...

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 button ...