Hello everyone, I have a question where I need to write which value D3,D2,D1,D0 will have for all possibilities of A3, A2, A1, A0. Here is the image: This question seems very straightfoward. I just have to check A2 to see which ROM will be enable, then I check the address (A3,A1,A0) then I check what will be in D3,...,D0. My question is: what is that "A▼"? And what is that "} A 0/7"? and in what order is the output? is the MSB the one in "A▼"? PS: Sorry for my english.