Boolean Algebra
At first glance, this chapter may seem like the most intimidating because it revolves around math and logic. However, the material’s bark is by far worse than its bite. The whole gist behind this chapter is learning to manipulate binary numbers and analyzing their outputs using what is called Boolean logic or Boolean algebra.
The term might be off-putting to most; however, the type of algebra that will be explored in this book is not the standard algebra that is taught in high school. Instead, the type of algebra that will be explored here is based on two numbers, 0 and 1. This type of algebra is extremely important to PLC programmers and even electrical engineers who work on digital systems such as PLC-based systems, as it allows engineers to model the logical behavior. More specifically, it allows engineers to more effectively model the behavior of switch configurations, contact configurations in Ladder Logic, and control statements in Structured Text.
