a) Using the Logisim circuit simulator, draw the circuit for the full adder.

Take a screenshot of your adder circuit and insert it here.

b) Test your full adder circuit by trying all the possible input combinations and comparing them with the truth table for the full adder. Write the truth table for the full adder here.

Using the Logisim circuit simulator, draw the following circuit:

Take a screenshot of your circuit and put it her

Using the constructed circuit, fill out the truth table below.

A	B	C	Y

Using DeMorgans Theorem, in Logisim draw another circuit that will produce the same truth table as in Q2(a) above (you can use only AND gates and NOT gates in your answer).

Put a screenshot of your circuit here.

a) Using the Logisim circuit simulator, draw the circuit for the subtraction unit shown in the lecture notes.

Put a screenshot of your circuit here.

Briefly describe how this circuit ensures that the B input value in the above circuit is either used without change when performing addition, or is negated when performing subtraction.

Marking Rubric:

Not attempted: 0 marks; Partially completed: 1 mark; Fully completed: 2 marks

a) Using the Logisim circuit simulator, draw the circuit for the subtraction unit shown in the lecture notes.

Put a screenshot of your circuit here.

Briefly describe how this circuit ensures that the B input value in the above circuit is either used without change when performing addition, or is negated when performing subtraction.

Marking Rubric:

Not attempted: 0 marks; Partially completed: 1 mark; Fully completed: 2 marks