1. Draw the symbols for the NAND, NOR, XOR, and XNOR gates. What is the difference between the Buffer, AND, OR, XOR and the NOT, NAND, NOR, and XNOR gates?
2. Modify the circuit from question 2 to use a second AND gate on the chip. You should use the same input switches on the circuit, so the resulting lighting of the LED should be the same.