How are demultiplexers used in memory address decoding?

A demultiplexer routes one input to one of many outputs based on select lines. In memory address decoding, upper address bits feed demux select inputs, and outputs enable individual memory chips. For example, with 4 memory chips of 16KB each, a 2-to-4 demux uses address bits A15-A14 to select one chip (CE signal), while A13-A0 address locations within the selected chip. This creates 64KB contiguous memory space. Demux-based decoding is simple but may create glitches during address transitions.