Discussion in 'Homework Help' started by Ranjita ningthoujam, Nov 10, 2010.
I want to know how to construct a 3-8 decoder using a 2-4 decoder
I moved your post from the other thread, as it is an other question.
Now you have your own thread.
That show the simple arrangement of a 2 to 4 bit. By adding a third input stage and four more AND gates you get the 3 to 8 bit. Hint: some of the AND gates will now require 4 inputs max.
Can you show the truth tables for a 2 to 4 and a 3 to 8?