PLC Hardware and Programming: Multi-Platform

Lessons

What is a PLC? (Preview)

Length: 3 minutesComplexity: Easy

A PLC, or Programmable Logic Controller or Programmable Controller, is a digital computer used to control electromechanical processes, usually in an industrial environment. It performs both discrete and continuous functions and differs from a typical computer in several important ways.

History of PLCs

Length: 23 minutesComplexity: Easy

Although PLCs have only been in existence since the 1960s, the evolution from computing machines into their current form is interesting and illuminating. This section examines the history of PLCs and their parallel development with computers.