Which layer is typically grounded in most chips and motherboards?

The ground layer is typically the layer that is grounded in most chips and motherboards. This layer serves a crucial role in providing a common return path for electrical current, which helps to maintain a stable reference point for other voltages present in the system. By grounding the ground layer, it reduces noise and interference among signal and power layers, helping to ensure that signals are transmitted clearly and without distortion.

This configuration not only enhances the overall performance of the electronic device but also protects sensitive components by providing a pathway for excess electrical energy to safely dissipate. Grounding in this manner is essential for the reliability and functionality of electronic designs, making it a standard practice in motherboard layouts and chip designs.

In contrast, other layers, such as the power layer or signal layer, have specific functions related to delivering electrical power and transmitting data, respectively, but do not serve the same function of providing a common grounding point for stability and interference reduction.