本设计才用低功耗16bit单片机MSP430F2274作为整个控制核心，利用低噪声，低功耗，有良好共模输入抑制能力的仪表放大器INA2331。带人机LCD接口。实现心电图测量。-This design only with low-power 16bit microcontroller MSP430F2274 as the control core, low noise, low power consumption, good common mode input rejection of the instrumentation amplifier INA2331. With the human-machine LCD interface. Realization of the ECG measurement.