基于单片机的语音录放电路设计与实现

声。Compared with traditional recording methods, it only requires very few electronic devices to achieve recording and playback functions, and can permanently save data. Currently, in foreign countries, voice recording circuits have been widely used, and in China, the climax of voice recording and playback application circuits is gradually forming. In our daily lives, voice storage and playback technology has been widely applied, such as bus stop announcers, interview pens, MP3 players, telephone voice automatic transfer messages, etc., making products more powerful in function, gradually phasing out the traditional way of cassette recording, facilitating people's lives and promoting social progress. This thesis is based on the AT89S52 single-chip microcontroller and ISD4004 voice recording and playback chip as the main components, realizing the function of voice recording and playback through hardware and software design. The system hardware circuit is simple in design, easy to debug, cheap in price, and practical. Keywords: Voice recording and playback system; single-chip microcontroller AT89S52; ISD4004.