A simulator is a program that simulates the functioning of electronic circuits. Simulator allows the designer to determine the correctness and efficiency of a design before the system is actually constructed.
A stimulus file is used for simulating input from external
hardware. The stimulus file provides a series of inputs to the simulator to
observe the overall behavior of system. The stimulus file for micro controller
process consists for cycle counter and pin states.
An important consideration while selecting a simulator is its execution speed i.e. how fast it can execute the application’s instructions. If the execution speed of simulator is less compare to the processor then the simulator may take hours in a simulated environment. The delay may be due to complex interactions within the system being simulated. Therefore the simulator’s result are deviated from the actual operation.
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