A design using quartus software, can't figure out how to choose my choice

[Nickclark]

hello,
i designed a project and i finished it my final step is i want the user to enter 3 bits
if it was 000 i will do the first choice, which has 4 inputs and 14 outputs displayed on the 2 digit 7 segment dispaly
if it was 001 i will do the second choice, which has 5 inputs and 7 outputs displayed on the 7 segment dispaly
if it was 010 i will do the third choice, which had 5 inputs and 4 outputs displayed on the LEDs
if it was 1xx i will do the last choice, which has 4 inputs and 14 outputs

i don't know how to do so! please advise..
thanks in advance.

 

[anorlunda]

Divide the problem into two parts.

First step is a decoder. Given 16 combinations of 4 input pins., then raise one of 16 output pins. Here is a circuit.

part 2, feeding each segment of the display, use an OR gate. if the segment is on for pins 2, 4 and 9, then wire the decoder outputs 2, 4, and 9 to that OR gage.there are also IC packages that can do the whole job, or a software driven micro-controller can do the whole job.