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

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
 PhysOrg.com science news on PhysOrg.com >> New language discovery reveals linguistic insights>> US official: Solar plane to help ground energy use (Update)>> Four microphones, computer algorithm enough to produce 3-D model of simple, convex room

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