Use CircuitVerse to create the BCD decoder and 7-segment display circuit using the equations in p. 10 of Lecture Note 3. (First, select “New Circuit +” under the Circuit menu. Then, build the BCD decoder with 4 “input indicators” as inputs and 8 “output indicators” as outputs. Afterward, add the BCD circuit as a sub-circuit by selecting “Main,” “Insert SubCircuit” under the Circuit menu, and finally select the “BCD decoder” circuit. Add 4 “input indicators” as the inputs and a 7-segment display as the outputs ofthe subcircuit.) Include the circuit diagram inside the subcircuit in your report. Also, include four simulation circuits (in subcircuit form) with 4 different BCD input patterns in your report.

Use CircuitVerse to create the 4-bit Adder-Subtractor in p. 27 of Lecture Note 3. (Use the SubCircuit feature to build one Full Adder first. Then, connect four Full Adder in a chain to create a 4-bit Adder subcircuit. Finally, create the 4-bit Adder-Subtractor by using this 4-bit Adder subcircuit.) Include the circuit diagram inside the subcircuit in your report. Also include the simulation circuits with one example of addition and one example of subtraction in your report.