Astable means that it keeping switching, like a clock signal, as opposed to a lightswitch which is bistable (will stay where it is in either position) https://

Astable means that it keeping switching, like a clock signal, as opposed to a lightswitch which is bistable (will stay where it is in either position) https://en.wikipedia.org/wiki/Multivibrator https://en.wikipedia.org/wiki/Multivibrator