数码管应用 该文件中包括51单片机应用中的数码管应用的几个方面，是初学者的好帮手，有数码管显示时钟，温度，显示键盘值，实例丰富。-Digital document management application that includes 51 single-chip applications in several aspects of digital control applications, is a good helper for beginners, with digital disp