LSI design flow and EDA

Which logic simulation method computes only the parts affected when a signal value changes (an event)?

  1. AElectromagnetic simulation
  2. BEvent-driven simulation
  3. CMonte Carlo simulation
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Answer: B. Event-driven simulation

Event-driven simulation computes the gates fed by a signal only when that signal changes, skipping parts with no change. It efficiently examines behavior, including delays, even for large circuits, and is the basic method of Verilog and VHDL simulators.

  • A. Electromagnetic simulation computes the behavior of electromagnetic waves.
  • B. Correct. It computes only in response to value changes.
  • C. Monte Carlo repeats simulations with random variations.
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