Schematic diagrams are used to describe a high level functioning of a system or a process. They simplify and facilitate communication by visualizing the relationships between system objects and making them more obvious. If you are designing or trying to understand a system, diagramming it will certainly help.

Why do we use schematics?

The main purpose of a schematic diagram is to emphasize circuit elements and how their functions relate to each other. Schematics are an extremely valuable troubleshooting tool that identify which components are in series or parallel and how they connect to one another.

Why is it important to be able to read a schematic?

That's all there is to schematic reading! Knowing component symbols, following nets, and identifying common labels. Understanding how a schematic works opens up the whole world of electronics to you! ... Series and Parallel Circuits - Building circuits in series or parallel requires a good understanding of schematics.