Chapter 6, Problem 40E

In digital logic applications, a +5 V signal represents a logic “1” state, and a 0 V signal represents a logic “0” state. In order to process real-world information using a digital computer, some type of interface is required, which typically includes an analog-to-digital (A/D) converter—a device that converts analog signals into digital signals. Design a circuit that acts as a simple 1-bit A/D, with any signal less than 1.5 V resulting in a logic “0” and any signal greater than 1.5 V resulting in a logic “1.”