The input bits A, B, Cin, S1 and S0 start at 0. Click on an
input bit to toggle its value between 0 and 1. S1 is the most
significant bit and S0 the least significant bit of the
select lines of the multiplexer.
The multiplexer inputs are labeled with their number and the
select code that chooses them: I₀(00) is the sum of the full
adder, I₁(01) is the AND gate, I₂(10) is the OR gate and
I₃(11) is the XOR gate.
Start - Starts the simulation for the selected inputs.
While it runs, the same button pauses and resumes it.
Select the speed (1x, 2x or 4x) from the dropdown menu, before
or during the simulation.
When the simulation finishes, the outputs F and Cout are
shown. Change the inputs and click on Start again to
try another combination.
Reset - Resets the simulation and sets all the inputs
back to 0.