- #1

JJBladester

Gold Member

- 286

- 2

## Homework Statement

Draw a logic circuit for the case where the output, HOLD, is LOW only if the input, LOAD, is HIGH and the input, READY, is LOW.

## Homework Equations

Truth tables for AND, OR, NAND, NOR, XOR, XNOR are known (I'm not re-typing them here).

## The Attempt at a Solution

My drawing above uses an XNOR gate. However, I wasn't sure if it satisfies the original question because the output of an XNOR gate can be low for two conditions per the truth table below.

Is there any way to design a logic circuit to satisfy the top input being *only* high and the bottom input being *only* low? In other words, I need the XNOR functionality excluding the second row where A=0, B=1, and Output=0.