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- 本节是通过C语言编写的简单时钟程序,时钟主要由单片机、LED数码管和按键开关所组成。 数码管U2的小数点为秒点,每秒闪烁一次。-This section is written in C, simple clock program, mainly by the microcontroller clock, LED digital tube composed of switches and buttons. U2' s digital point decimal seconds, flashe