【摘要】 USB广播播放控制系统采用"一线通"设计方案,整个外部设备与主控计算机只有一根USB线相联,简化了结构,提高了可靠性。详细介绍了系统的硬件电路的设计和软件模块的编程,包括接口与主控电路、数模模数转换电路、调频电路的设计以及USB固件程序、USB驱动程序、播放控制窗口程序的编制。该系统功能强大,性价比较高,在各类学校及企事业单位等小型广播站具有广阔的市场前景。更多还原

【Abstract】 By using "Yixian Tong",the USB broadcast playing and controlling system is designed,in which the whole external equipment is linked to the main controlling computer by only one USB cable.Thus its structure is simplified and its reliability improved.This paper describes in detail the hardware circuit design and software module programming,including the designs of the interface circuit,control circuit,analog-digital and digital-analog conversion circuit,FM circuit,and the programming of the USB firmware,USB driver routine,playing and controlling window procedure.The system is functionally powerful and quite cost-effective.It has broad market prospects in the small radio stations of various schools,enterprises and public institutions.更多还原