System design mainly includes the addition circuit, A/D analog-to-digital conversion module, serial communication module, PC display module, etc.

系统设计主要包括加法电路，A/D模数转换模块，串口通信模块，上位机显示模块等部分。

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There were analog multiplexers, A/D conversion(analog digital conversion), FIFO module, CPLD module in the hardware design and CPLD program, USB firmware, USB driver in the software design.

在硬件上包含多路开关、模数转换、FIFO模块、CPLD模块、USB模块； 在软件上包含CPLD编程、USB固件、USB驱动以及应用程序。

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