What is it called when software is used to simulate the hardware of a physical computer?

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The what is it called when software is used to simulate the hardware of a physical computer? is developing at a frantic pace. New versions of the software should be released several times a quarter and even several times a month.

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There are several reasons for this dynamic:
First, new technologies are emerging, as a result, the equipment is being improved and that, in turn, requires software changes.
Secondly, the needs of users are growing, requirements are increasing and the needs are changing for what is it called when software is used to simulate the hardware of a physical computer?.
Therefore, it is necessary to monitor changes in the what is it called when software is used to simulate the hardware of a physical computer? and to update it in a timely manner.

/ If you do not update in time, you can become a victim of viruses and scammers, which can lead to irreversible consequences. Be careful!/

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