基于Qt例程编写的多皮肤模拟+数字时钟，可运行在嵌入式Linux系统，如：树莓派。-an analog+digital clock based on Qt, which could run on an embedded linux system, e.g Raspberry PI

树莓派Linux系统下利用GPIO控制数码管的代码-Under Raspberry Pi Linux system ， the code uses GPIO to control digitaltube.