diff --git a/tech/PCB.wiki b/tech/PCB.wiki
index 435a809..4245eb4 100644
--- a/tech/PCB.wiki
+++ b/tech/PCB.wiki
@@ -6,6 +6,10 @@ and components for use in computers and embedded applications.
 To create a PCB you must use Electronic Design Automation (EDA) software. They
 help you turn breadboard circuts into PCBs.
 
+== Structure ==
+
+* Components are connected with copper trace (wire)
+
 == Software ==
 
 Some common software includes