A 12-cynchronous-lead ECG system,composed of Parallel-to-USB interface IC FT245BM,4-channel, simultaneous,sampling,high speed,12 bit ADC IC AD7864 and 8 bit single chip IC AT89C51ED2,is presented.

• 提出了基于USB芯片FT245BM、高速四通道12位同步A/D转换芯片AD7864和64管脚8位单片机AT89C51ED2的十二导联同步心电采集系统。