- #1

CoolDude420

- 201

- 9

## Homework Statement

Design an combinational circuit using a decoder and external gates defined by the boolean functions F1, F2, F3(see picture)

## Homework Equations

## The Attempt at a Solution

I'm quite confused as to the exact method in doing this. I understand that a decoder takes n inputs and produces 2^n outputs. The combination of the n inputs correspond to binary numbers, whatever binary numbers the inputs make, the corresponding output line will be 1. For example if x=0, y=0, z=0, that repersents binary 0, so D0 will be 1.

My confusion arises when there are minterms in F1,F2,F3 that only have 2 variables. Do I just set the third, non present variable to 0? Any ideas?