With the circuit shown, you build a bistable multivibrator using two NOR gates. Convince yourself that this circuit behaves exactly the same way as the transistor circuit from Experiment 3.
This is a digital flip-flop circuit.
All flip-flops are basically bistable multivibrators.
Flip-flops constitute an important class of circuits in digital electronics. More information can be found under the topic Flip-Flops.
Next to monostable multivibrators...