

There are, of course, exceptions to this convention. Currents usually flow from top to bottom. Signals flow from left to right, and voltage potentials generally (for voltage regulation) decrease from left to right. We don’t have any experience with reading words from right to left as used in some languages, so we can’t speak for how a schematic should be best laid out for people working in these regions. So, how to read a schematic? At a very high level, schematics across most of the “western world” are read from left to right, the same as we read the text in our languages. We’re not talking about adding flourishes or artwork to your schematic, just about how symbols and components are simply connected, labeled, and laid out on the schematic sheet. In our view, schematics should meet both of these definitions, and by creating schematics that are simple, graceful, and stylish, you should automatically make something readable.

A schematic drawing will not only tell your PCB design software what needs to connect where, but it also communicates the purpose of a circuit to other people.
