51单片机的ARM汇编实现（纯原创上机通过）可能有待优化，但是鉴于汇编得高效率，依然比c及以上高级语言有着速度优势，这段代码比较短但是他可以实现按键，数码管显示（共阳），定义数组等功能，可供单片机初学者学习使用。-

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51 microcontroller ARM assembly (pure original computer through) may need to be optimized, but given the assembly efficiency, still better than c and above a high-level language has a speed advantage, this code is shorter but he can implement key, digital tube display (Yang), define an array of functions, such as for SCM beginners learning to use.