About the video
This lesson provides an overview of Programmable Logic Controllers (PLCs), focusing on their history, components, and functions in industrial automation. You’ll learn about the evolution of PLCs from electromechanical relay circuits to modern programmable devices, and how they simplify complex automation tasks. The video explains the main components of a PLC system—inputs, processor, and outputs—and how they work together to automate control processes. Using the example of an automatic dishwasher, the lesson illustrates how PLCs take inputs, perform logic operations, and control outputs to manage various industrial applications efficiently. To get started, go to the Lesson Content tab and click on the video.
About the quiz
Each lesson contains a video, and is followed up with a simple quiz. Quizzes review information discussed within the video, with each question providing an answer justification. Helping to reinforce correct answers and helps clarify any mistakes through code citations, excerpts, and explanations, so you can better understand the material.
Charges
Charges are rewards you earn for engaging in our learning system. You receive charges for completing both the video and the quiz in each lesson. The amount of charges available for each lesson is displayed in the “Lesson Features” box on the right. The charges you earn are based on the time it takes you to complete the lesson, which is also indicated in “Lesson Features.”
Lesson Content
