Watching your old town grow up is like watching the end of your Z-favorite TV show, or watching the sequel to a good movie when it comes out. The town I grew up in was laid out on the streets, and the streets were so wide you didn't even need to park parallel to the city center. It's such a small town that traffic jams consist of two people in different cars stopping and talking more often than incidents. When I went back to watch, the town had grown; the expansive parking lot had been converted into an extra driveway.

Let's say this town draws more current than I did in my childhood. Traffic jams and incidents are sure to add, but some foresight in urban planning makes things too messy. Just like a PCB, proper planning can prevent nasty incidents and unfortunate planning failures that then block traffic and force mistakes to happen. Proper PCB planning is not just about putting traffic police on the crosswalk, in general, to ensure that the traffic flow stays at a tolerable and smooth level, you need to plan ahead along with understanding the power circuit. required component connections.

Adequate trace routing requires the same attention to PCB planning as urban planning. With the lack of tracking routing, you won't have a traffic accident or hundreds of people being late; however, you'll have short circuits. In the same way that you have an unnecessarily long traffic light affecting a relatively low traffic road or no stop sign as you approach a busy intersection, incorrect routing can affect the quality of solder joints, marks on interior layers can also cause short circuits. With a deeper understanding of tracking routing, you can better plan your PCB to meet its traffic.