"基于单片机的可控数字音乐盒设计与程序实现"

This paper presents the design and development of a controllable digital music box based on the AT89C51 microcontroller. The digital music box is programmed to generate music by controlling the microcontroller's internal timer to produce different frequency square waves, which in turn drive the speaker to emit various musical tones. The program converts musical notes into corresponding timing constants to drive the sound-producing devices and play pleasant music. The digital music box is capable of playing five different songs and features three different patterns of LED lights that change in sync with the music. The LED lights flash in coordination with the music when playing a song, and they start blinking in different patterns when the music stops. Users can easily switch between songs and LED patterns as desired. Additionally, a digital display continuously updates the song and LED pattern numbers to provide visual feedback to the user. The design and development of the digital music box involved simulation of the hardware circuit using PROTEUS simulation software and compiling the music box source code in C language using KEIL software. The end result is a versatile and interactive digital music box that combines music, visuals, and user control in a single compact device. Overall, this project demonstrates the application of microcontroller technology in creating a fun and innovative music device that offers functionality and entertainment. The use of the AT89C51 microcontroller, along with simulation and programming tools, helped in the successful implementation of the digital music box design. This project opens up possibilities for further exploration and enhancement of digital music devices using microcontroller technology.