# Implement ABC'D' using only one 2-input nand gate and one 3-input nor gate

1. Feb 24, 2012

### nicnick77

1. The problem statement, all variables and given/known data

How do I implement ABC'D' using only one 2-input nand gate and one 3-input nor gate?

2. Relevant equations

3. The attempt at a solution

2. Feb 24, 2012

### LCKurtz

I assume you have A,B,C,D as inputs. My hint would be to start by writing it as$$\overline{(\bar A+\bar B)}(\bar C)(\bar D)$$

3. Feb 26, 2012