这个实验使用ATmega48单片机，这段代码通过“送数”与“延时”的交替，实现了端口

上LED的“轮流闪烁”效果。

//硬件环境：ATmeg48 单片机，CPU时钟1MHz

//软件环境：ICC AVR6.3以上

-This experiment using ATmega48 microcontroller, the adoption of this code, " send a few"　and " delay"　of the turn, the port LED to achieve the " take turns flashing"　effect.// Hardware environment: ATmeg48 single-chip, CPU clock 1MHz// Software Environment: ICC AVR6.3 more than