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The first computers did not have operating systems. Each program that was running on these first computers had to include all the code needed to run on the computer, communicate with the connected hardware and perform the calculation that the program was intended to perform. This situation made even the simplest programs become very complex.…
At the user level of a PC, we can say that there are two types of Operating Systems: OS for PC and OS for Mobile Phones. But there is also a wide family of operating systems categorized according to the types of computers they control and the type of applications they support. The 4 categories…