采用nios2的嵌入式数字钟的设计与实现，首先使用quartus2中的sopc builder设计CPU内核，然后在nios2中庸C语言来实现数字钟的功能-The use of embedded digital clock nios2 the design and realization of the first to use quartus2 in sopc builder design CPU core, and then nios2 Zhongyong C language to real