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8. There are three cooperating processes. They all read data from the same input device. Each process, when it gets the input device, must read

8. There are three cooperating processes. They all read data from the same input device. Each process, when it gets the input device, must read two consecutive data, only one process may access the input device at a time (Hint: use mutual exclusion to achieve it). Use semaphores to synchronize. Include declaration and initialization. (SEE example on Canvas and Video) P1: input (a1, a2) P2: input (b1, b2) P3: input (c1, c2) Y = b2 + a1 +c2 X= a2 + c1 + W W = a1 + c2 + Y Print W Z = X + Y Print Z

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