The 4000 series facilitates simpler circuit design through relatively low power consumption, a wide range of supply voltages, and vastly increased load-driving capability (fanout). This makes the series ideal for use in prototyping LSI designs. Buffered models can accommodate higher electrical currents, but have a greater risk of introducing unwanted feedback. The 4001 IC contains a Quad 2-input NOR gate The NOR gate is a digital logic gate that implements logical NOR - it behaves according to the truth table to the right. A HIGH output (1) results if both the inputs to the gate are LOW (0); if one or both input is HIGH (1), a LOW output (0) results. NOR is INPUT OUTPUT A B A NOR B 0 0 1 0 1 0 1 0 0 1 1 0
