用义隆单片机EM78P153A,在WicePlus2.7081231开发环境下，编写的用于单按键控制多路音视频信号切换的C语言的源代码及流程图等全部设计资料。可供生成更复杂的控制程序。-Used TaiWan ELong : EM78P153A MCU with WicePlus2.7081231 development environment, The programer was made for using one key control to swich multichannel AV signal . Here　provide C code and the flowchart of C .