An emulator duplicates (provides an emulation of) the functions of one system using a different system, so that the second system behaves like (and appears to be) the first system. This focus on exact reproduction of external behavior is in contrast to some other forms of computer simulation, which can concern an abstract model of the system being simulated. Emulators in computer science Emulation refers to the ability of a computer program or electronic device to imitate another program or de… (More on Emulate)