Abstract: the main purpose of this experiment is build real time system using PPI 8255 to control devices connected to. Problem description: assume that there are two devices are connected to port A and two sensors are connected to port B of PPI 8255. Thcy work according to the following table

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A:

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A: your question is about transitive closure which is given below : 

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A:

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A: the code is an given below :

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