Very-large- scale integration (VLSI) is the procedure of creating an IC (integrated circuit) by merging thousands of transistors into a single chip. VLSI began in the 1970s when complex semiconductor and communication technologies were being developed. The example of a VLSI device is a microprocessor.
Simulation and Emulation are part of VLSI. Now the question arises what is the difference between them? In this blog, we will try to answer this question.
A simulation is a system that acts similar to something else, but is implemented in an entirely different way. A simulation is a system that provides the basic behavior of a system but may not necessarily abide by all of the rules of the system being simulated. It is there to give you an idea about how something works. For example, take flight simulator. It feels as if we are flying an airplane, but in reality we are completely disconnected from flying the plane.
Whereas, emulation is a system that acts exactly like something else and abides by all of the rules of the system being emulated. It’s like duplicating every aspect of the original device’s behavior. It is efficiently a complete imitation of another system, from being binary compatible with the emulated system's inputs and outputs, but operating in a different environment to the environment of the original emulated system. The rules are permanently fixed, and cannot be changed or the system fails. In today’s time hardware emulation has become one of the popular tools for the verification.
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