"基于51单片机的音乐播放器设计与实现：理论与实践结合"

This course project is focused on designing a music player based on the AT89C51 single-chip microcontroller. The integration of software and hardware in this music player system design and research plays a crucial role in gaining a practical understanding of microcontrollers. In this project, different musical notes correspond to different frequencies of sound. By generating pulse signals of varying frequencies through the microcontroller, amplifying the signals, and outputting them through a buzzer, harmonious melodies are created. By calculating the timing constants for each musical note based on its frequency and determining the duration of each note based on the tempo, the music player is able to play simple songs such as "Mom is the Best in the World". Keywords: single-chip microcontroller, music player, musical note frequencies.