It is important that you understand that each program is at least one
process and that each process has some attributes, such as:
In a multiprogrammed environment with just one processor, each process is executed little by little at a time, interspersed.
The operating system allocates the CPU a bit for each process. A process after receiving processor control will only lose it when an interruption occurs or when it requires an operating system service.
These interruptions are transparent to the processes, since they only temporarily interrupt their execution, which will then continue to be executed as if nothing had happened.
When requesting an operating system service, the process is blocked until the service required from the operating system is satisfied.
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