音响计算机辅助设计（CAD）系统——试论CAD系统的二次开发

音响计算机辅助设计（ＣＡＤ）系统———试论ＣＡＤ系统的二次开发———梁国生１前言计算机辅助设计（ＣＡＤ）系统是近年来工程技术领域中发展最迅速、最引人注目的一项高技术，是设计技术由传统手工操作走向现代科学化的必经之路，已成为工业生产现代化的重要标志。今...

Net-hanging TV Closed-circuit Monitor System Ye Huiwen(16) CAD for Audio

By using the fundamental concept of computer network,a systematic control network has been combined by the tranditional video closed circuit monitor network and the microcontroller based control design.Through the communication network,controls in the monitor points combine numerous video monitor signal lines and control singal lines into two signal buses,ie.the video signal bus and the control signal bus. Each monitor terminal brings the video signal output into the video signal bus ,and the connected control signal is put in contact with the signal bus.In this way the signal connection lines of the whole system are clear cut,so that it is convenient for standardized installation as well as maintenance and less investment.