Answer :
The sentence is true.
Simulation is an excellent technique to use when a situation is too complicated to use standard analytical procedures. A simulation is a trial-and-error approach to problem-solving. A simulation trial showing what will happen when the values of the potential inputs change.
In addition to its use as a tool to better understand and optimize system performance and/or reliability, simulation is also widely used to verify design correctness. Most all digital integrated circuits manufactured today are first extensively simulated before being manufactured to identify and correct design errors. Simulation early in the design cycle is important because the cost of correcting errors increases dramatically as errors are discovered later in the product lifecycle.
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