2021 데이터구조 기말고사

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3. We should look at return self.pin.getFrom().getOutput()
The return keyword can send a value back to the main program. The self is used to represent the instance of the class. Self was g3 from the textbook and pinA is the middle point, and considering getfrom, it refers to g1. And by getout, we get the output from gate before. When we see this part of the textbook, we see performGatelogic so we go to that part and the picture below process is implemented.

We can see that self.pin is c1 and this is a connector. The self.pin.getfrom gets the pin from the gate. The basic building block for this simulation is the logic gate. The connector class here does not reside in the gate hierarchy. It connects the output of one gate to the input of another. Also, when we want to initialize any data items that are inherited from the Logicgate, we get the label for the gate and the constructor add input lines and these are pins and this method is common in building class hierarchies.

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