Printed circuit boards are stacked and connected together to form a module using what technique?

The technique of stacking and connecting printed circuit boards (PCBs) to form a module is known as Modular Circuitry. This approach enables greater flexibility in design and easier upgrades, as individual modules can be replaced or modified without needing to redesign the entire system. Modular Circuitry also promotes efficient use of space, as multiple layers of functionality can be integrated into a single unit, facilitating more complex electrical interconnections while maintaining a manageable form factor.

Surface Mount Technology primarily pertains to the method of mounting components directly onto the surface of PCBs rather than stacking boards. Integrated Circuit Design focuses on creating microelectronic circuits within a single chip, rather than assembling multiple circuits from separate boards. Layered Assembly might refer to techniques used in stacking and soldering without the specific context of design and component integration associated with Modular Circuitry. Therefore, Modular Circuitry is the most appropriate term for representing this practice of connecting stacked PCBs to form a cohesive module.