Create a 4-1 mux using only tri-state buffers and inverters in logic works. this circuit will select one output from four inputs based on two addition switches. read textbook page 140 section 3-7 multiplexers before implementing this lab assignment (you can find the digital version of this section on the blackboard). you can test out your circuit using binary switches and a hex keyboard (use ctrl-f to show signal values).

a. this mux should have two selector lines so and s1 and four input lines a-d.