Virtual machine topic
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In computer science, a virtual machine (VM) is a software implementation of a machine (computer) that executes programs like a real machine.
A virtual machine was originally defined by Popek and Goldberg as "an efficient, isolated duplicate of a real machine". Current use includes virtual machines which have no direct correspondence to any real hardware.
Example: A program written in Java receives services from the Java Runtime Environment software by issuing commands from which the expected...
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