SR NOR Latch: Basic Construction
Static memory cells and basic state-holding elements rely on feedback loops to retain data. The fundamental building block of these memory structures is a bistable multivibrator that stores a single bit of state and responds to explicit set and reset commands.
The circuit receives a Set (S) and Reset (R) signal and produces a state output (Q) and its complement (Qn). When both inputs are low, the circuit must hold its previous state. Driving both inputs high forces both outputs low.
| S | R | Q (next) | Qn (next) | |-----|-----|------------|-------------| | 0 | 0 | Latch | Latch | | 0 | 1 | 0 | 1 | | 1 | 0 | 1 | 0 | | 1 | 1 | 0 | 0 |
Constraints
- Use exactly two NOR gates.
- Implement cross-coupled feedback directly from the outputs to the inputs.
- Do not use any sequential primitive blocks like D-flip-flops or predefined latches.
Topics
Solve this problem
Place the gates, wire them up and watch the signals settle. Every submission runs on the same simulation engine that grades it.
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