我这次上传的是关于嵌入式C语言程序设计的程序源码，一次是以下几个程序：数字时钟1；LCD的显示控制；数字时钟2；电子音乐；步进马达；D/A转换器；绘图形显示器；RS232-My upload is about the Embedded C language source program design process, one is the following procedure: Digital Clock 1 LCD display control digital clock 2 ele