What is the address input in demultiplexer?

In a demultiplexer, the address input specifies which output line will be activated based on the binary value provided. For example, if a demultiplexer has four outputs, it requires a 2-bit address input (00, 01, 10, or 11) to select one of those outputs. The selected output corresponds to the binary value of the address input, allowing the demultiplexer to route a single input signal to the designated output.