I just bought this book. It has been on my desk for 2 days. The cover is a little dirty, but the inside is brand new. The original price is 49.8, but now it is 30% off. It can be cut with a knife. If ...
As shown in Figure 1, there are layers such as Top Overlay on the PCB, but there is no such layer in the toolbar below; As shown in Figure 2, the settings are set to display these layers. Please help!...