Microsoft Excel

From utilizing the simulation for task #3, I have ardously discovered the program proved De Morgan's Law as true because the equation (a and b)= not a or b are the same. For example, I took output 1 "A Not And B" and it was the same for output 2 which is "Not A OR Not B" Even though I interchanged the inputs, both outputs came out with the same result.

Logic Circuit 1

From the truth table whenever I added 0's for both inputs, my output came up as 1. Adding a 1 to input A and a 0 for input B or vice versa came up with an output of 0. Plugging a 1 into both inputs gives me an output of 1.