Thirdly, most of digital circuits are integrated into Xilinx XC2C128 CPLD so as to simplify design and to improve the stability and reliability of the system.

• 三是用复杂可编程逻辑器件Xilinx XC2C128 CPLD对系统大部分的数字电路进行了集成化设计，达到了既简化电路设计，又提高了系统可靠性的目的。