Computer architecture simulator

A computer architecture simulator is a program that simulates the execution of computer architecture.

Computer architecture simulators are used for the following purposes:

Lowering cost by evaluating hardware designs without building physical hardware systems.
Enabling access to unobtainable hardware.
Increasing the precision and volume of computer performance data.
Introducing abilities that are not normally possible on real hardware such as running code backwards when an error is detected or running in faster-than-real time.

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