Printed circuit board layout

The first principle of the layout is to ensure the routing of the wiring, pay attention to the connection of the flying line when moving the device, put the device with the connection relationship together.
1. Separate digital devices from analog devices and keep them as far as possible c. Place decoupling capacitors as close as possible to the device's VCC.
2. Use Array and Union functions provided by the software to improve layout efficiency.
3. Consider soldering later when placing the device. Don't be too dense.
There are also two ways of wiring, manual routing and automatic routing. The two methods are used together. The commonly used steps are manual-automatic-manual.