Sequential Logic — Another commonly used name In the context of digital circuits, what is another widely used description for circuitry referred to as “sequential logic”?

Difficulty: Easy

Correct Answer: flip-flop memory circuitry

Explanation:


Introduction / Context:
Digital logic is divided into combinational and sequential categories. Sequential logic stores state and reacts to both current inputs and past history. Understanding alternative phrasing helps connect textbook terminology with practical design discussions.



Given Data / Assumptions:

  • Sequential logic inherently uses storage elements (flip-flops, latches, memory).
  • It relies on clock or timing events to update stored state.
  • Combinational logic, by contrast, has no memory of past inputs.


Concept / Approach:
Because sequential circuits require flip-flops or latches to store state, they are often colloquially summarized as “flip-flop based memory circuitry.” This conveys the essential property: the presence of state (memory) updated by timing events.



Step-by-Step Solution:
Identify key trait of sequential logic: dependence on stored state.Recognize implementation: flip-flops/latches form the memory core.Map phrasing: “flip-flop memory circuitry” best matches sequential logic.Exclude unrelated terms: inverter (purely combinational), generic block names.


Verification / Alternative check:
State machines (Mealy/Moore) and pipelines are built from flip-flops plus combinational logic; documentation frequently refers to “sequential (flip-flop) logic.”


Why Other Options Are Wrong:

  • logic macrocell / logic array: Implementation terms that can include either combinational or sequential features; not a synonym for sequential per se.
  • inverter: A single combinational gate with no memory.


Common Pitfalls:
Confusing storage with just propagation delay; memory requires explicit state elements (flip-flops/latches), not gate delay.


Final Answer:
flip-flop memory circuitry

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