评估板 - 扩展板，子卡

Evaluation and expansion boards and daughter cards are used to add functionality to microcontroller platforms and are designed to stack onto existing pin headers or preconfigured attachment ports. Common function types include, amplifiers, atomizers, audio, clock timing, interface connectivity, data acquisition/logging, display, human interface, memory, motor drivers, optoelectronics, power management, prototyping, relay and transistors, RF and sensor arrays.