摘要
介绍了一种基于AT89C51的较为简单实用的低成本计算机音/视频切换电路。通过对计算机音/视频信号的分析,详细给出了中心控制模块、VGA视频切换模块、音频切换模块以及音量调节模块等电路,并阐述了其工作原理。
A kind of easy, applied and low cost computer audio/video switch circuits have been introduced.According to the analysis of computer audio and video signals, the circuits of center control module, VGA switch module, audio switch module and volume regulate module have been given in detail, meanwhile the work principle is also expatiated.
出处
《电声技术》
2007年第B06期31-34,共4页
Audio Engineering
关键词
视频切换
音频切换
数控音量
VGA
video switch
audio switch
digitally controlled volume
VGA
