It’s the flip-flop, and while its inventors likely couldn ... The second decade of the 20th century was a time of rapid innovation in electronics, brought about by the development of vacuum ...

It is also used in specialized applications where fluids are already flowing, like shower heads, automotive transmissions, and in places where electronics ... to an RS flip-flop.

ON/OFF power control with flip/flop-free, debounced push ON push OFF toggling, power-on reset, and a low parts count.