A RS NOR Latch is used for turning on an input changes state.
Both sides are both inputs and outputs. One side is always outputting a signal. if the opposite side recieves a pulse, the latch flips and starts outputing on that side and the original output side is now the new input. Also known as a 1-bit counter. Useful for turning a single pulse into a continuous signal.
The picture (right) shows a RS Latch connected with a Timer to create a timed delay. If you turn on both inputs, this device will burn out.
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