摘 要现如今随着时代的进展，收音机已经遍布于家家户户，然而人们所使用的大多模拟调谐制式的，在收音效果上面还有许多的不足，为了使得收音效果更加，因而出现了数字调谐收音机。而本次设计的数控调频收音机的收音电路主要是通过STC89C52 单片机来控制频率的选择、声音的大小；收音电路内部所使用的芯片为RDA5807M，使得单片机与收音电路之间通过IIC 通信协议进行通信的，故使得该数控收音机比一般模拟收音机在频率的选择和声音的控制上更为准确。由于该收音机大部分都是由集成化电路所组成，因而减少了由于手工布线造成元器件间的相互干扰，使其具有噪音消除、低音增强、灵敏度高、噪声小、抗干扰能力强等优点；其收音范围为（ 76-108MHz ），体积小巧，非常适合于随身携带。关键词：数控收音机，调频，IIC 通信协议AbstractNowadays, with the development of the timesthe radio has been spread all over each and every family. These people use most are analog tuning system and have many shortcomings. In order to make the sound soundsmore good, a digital radio appears. Through the STC89C52 single-chip microcomputer he radio circuit NC FM radio is mainly controlled control the selection of frequency, the size of the sound. The radio circuit inside is the chip RDA5807M which can make the MCU and radio circuit through the IIC communication protocol, so that the NC radio is more accuratethan general analog radio in controlling the selection and the sound frequency. As the radio is mostly composed of integrated circuit, it can reduce the manual wiring causing mutual interference between the components which has the advantages of eliminating noise, bass boost, high sensitivity, low noise, strong anti-jamming ability and so on.The radio range is very wide(76-108MHz). It has small size so it is very suitable for carry on.Key words ：Digital radio, FM,IIC目 录第1 章绪论....................................................................................................
