Logic Circuits Self-timed Systems Concepts and techniques underlying the development of digital systems that operate asynchronously, i.e. without clock sources, and with minimal constraints on component and wiring delay values. Fault detection in self-timed systems is also of great importance and interest.
Metastability is another related topic.
Other relevant subtopics concern the design of asynchronous sequential circuits. Problems here pertain to flow table manipulation, state assignments, and the avoidance or defeat of critical races and hazards. Computer aided design methods for all of these problems is an important subject.