Simple digital electronics project ideas using logic gates, multiplexer, decoder?

The discussion focuses on simple digital electronics project ideas using logic gates, multiplexers, and decoders suitable for a lab implementation. The requester seeks straightforward yet practical circuits that can be applied in real-life scenarios such as home security or shop monitoring, with examples like an alarm system. Suggestions emphasize learning Karnaugh maps (K-maps) for logic simplification and implementing circuits at the gate level. Additionally, understanding state machines is recommended to design useful logic circuits. The conversation highlights the need for projects that are neither overly complex nor trivial, aiming for interesting and applicable digital logic designs.
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