Fan-in refers to the number of inputs that a logic gate or combinational circuit can accept. In the context of combinational circuits, a higher fan-in allows for more inputs to be processed simultaneously, which can lead to more complex and powerful circuits. The fan-in parameter is crucial for understanding circuit design as it directly influences factors like complexity, performance, and potential propagation delay in digital systems.
congrats on reading the definition of fan-in. now let's actually learn it.