设计了一种新型平滑度仪，详细描述了控制器、 数据采集、人机接口和实时时钟等模块的具体选型及设计；
A new smoothness tester has been designed and accomplished. This paper presents in details the module design of controller, data acquisition, man-machine interface and real clock.
在区域火灾报警控制器中，FM 31256芯片的非易失性数据存储器、实时时钟、看门狗等功能，增强系统可靠性。
The nonvolatile data memory, real-time clock, and watchdog functions of FM31256 chip were adopted by region fire alarm and control device to improve the system reliability.
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