论文中还给出了开关量输入、开关量输出、通信模块、时钟电路、数据存储器、按键电路和频率跟踪电路等各功能模块的选择方法和设计原理。
And the selection and design of switch-in module, switch-out module, communication module, clock module, data storage module, keys module and frequency detecting module are also discussed.
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