Obtaining a data sheet for each IC will explain how and why each one works. That should cover the next four questions.How is it the Demux knows which corresponding LED to switch on from the input from the MUX? Doesn't MUX just give a Logic 1 when the correspoding select input is toggled/selected? So the output should be just a logic 1 and the *E should only get a logic 1???
The 'LS138 is a shorthand notation. All logic IC's work as the data sheet says they do.I have 3 circuit ICs 74LS93(Binary counter), 74LS151(MUX) and 74LS138(DEMUX/DECODER).
by Jake Hertz
by Aaron Carman
by Duane Benson
by Aaron Carman