用一片FPGA、模数转换器ADC0809和数模转换器DAC0832构成一个数据采集系统，并用FPGA实现数据采集中对ADC、增量调制运算、DAC以及有关数据显示的控制-Using an FPGA, ADC and DAC DAC0832 ADC0809 form a data acquisition system and data acquisition with the FPGA on ADC, delta modulation operation, DAC, and control of the data