I created the simplified circuit with bus form so that is organized in a neat way that is easily read. I started grounding and powering the switches for each variable. Then I connected them to the bus. Then I created four lines with three of them only one gate and one of them having two gates. Then I connected then to OR gates so that I can connected the final expression to the LED. I used a total of 0 NOT gates, 5 AND gates, and 3 OR gates. This means for the gate chips we only need 0 NOT chips, 2 AND chips, and 1 OR chip. I figured this out by seeing how many gates I could have in a chip, and for the AND or OR gates I could only have 4 gates. I needed 2 AND chips to get all the outputs I needed. I was able to figure out the amount by the lovely sheets Mrs. Zienty provided for us. They helped alot when bread boarding.
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Bread-Boarding CircuitThe First picture shows me putting the basics on the breadboard. I connected my busses. I grounded and powered my gates. I know you can't see the green board, because I let someone borrow it. I connect my power to positive and my 0 volts to negative. Then the small wires in sets of four, our just connecting the switches so that they are better organized.
The second photo is me connecting so I can get the outputs: PV, PS, & PT. Then I added my resistor and LED so that I didn't mess them up later on down the road. The third image is me finally finishing with all the AND outputs and connecting them to the OR gates so that I can get the output I want. |