为了实现让单片机显示阿拉伯数字的功能，让我们来实现最简单的数码管显示：

单个数码管的静态驱动。

AVR单片机的端口驱动能力高达20mA，可以直接驱动数码管。可以利用ATmeg48

单片机的PD端口刚好可以驱动数码管的8个段。

这个实验的目的是在单个数码管上依次显示0，1，2，3，4，5，6，7，8，9，A，

B，C，D，E，F共16个字符，为显示十六进制数做好技术准备。-In order to achieve single-chip display Arabic numerals so that the function of, let us come to the realization of the simplest digital display: a single digital control of static drive. AVR microcontroller ports drive capability of up to 20mA, digital tube can be directly driven. Can use the PD-port single-chip ATmeg48 can just drive digital pipe paragraph 8. The purpose of this experiment was followed by a single digital tube display 0,1,2,3,4,5,6,7,8,9, A, B, C, D, E, F a total of 16 characters, to show hexadecimal number of good technical preparation.