Logic Levels

Contributors: bri_huang

Introduction

We live in a world of analog signals. In digital electronics, however, there are only two states – ON or OFF. Using these two states, devices can encode, transport, and control a great deal of data. Logic levels, in the broadest sense, describes any specific, discrete state that a signal can have. In digital electronics, we generally restrict our study to two logic states - Binary 1 and Binary 0.

Covered in This Tutorial

• What is a logic level?
• What are common standards for logic levels in digital electronics.
• How to interface between different technologies.
• Level shifting
• Voltage Buck-Boost Regulators

Suggested Reading

This tutorial builds on basic electronics knowledge. If you haven’t already, consider reading these tutorials:

• What is a circuit?
• Voltage, Current, Resistance, and Ohm’s Law
• Binary