transgalactic
May4-08, 12:07 AM
i need to implement a 8-1 MUX using 2^3X4 and 2^3X1 proms
where there is a chip select input in the MUX
here is the solution of the circuit and the programming tables
http://s290.photobucket.com/albums/ll279/t...=IMG_8816-1.jpg
i cant understand this circuit
there is s0 that goes in every prom independently
there is a chip select input inside of the "main prom"
i tried to trace out the way it works with pencil and paper
but this this really tough to understand
i couldnt get this pattern like in ordinary mux
that if we take s0=0 s1=0 s2=1 then take I1
eventually i got to the right answers
but i coudnt understand why????????
where there is a chip select input in the MUX
here is the solution of the circuit and the programming tables
http://s290.photobucket.com/albums/ll279/t...=IMG_8816-1.jpg
i cant understand this circuit
there is s0 that goes in every prom independently
there is a chip select input inside of the "main prom"
i tried to trace out the way it works with pencil and paper
but this this really tough to understand
i couldnt get this pattern like in ordinary mux
that if we take s0=0 s1=0 s2=1 then take I1
eventually i got to the right answers
but i coudnt understand why????????