这是一个播放音乐的程序，at51 的mcu，已经调试通过，

Proteus仿真实例，在Proteus下仿真LCD,可以使用，郑重推荐！-Proteus simulation example, in the Proteus simulation under the LCD, you can use, solemnly recommended!

显示了键盘消息的顺序,所有键盘消息都被捕获和记录在数组里，并在WM_PAINT消息里被显示出来。-Shows the sequence of keyboard messages, all keyboard messages are captured and recorded in the array, and where in the WM_PAINT message to be displayed.

X5045的读写应用程序，经过测试，完全能用-X5045 reading and writing applications, tested and fully use

st7920液晶显示模块,采用c语言编写,可直接显示12864 -st7920 liquid crystal display module, using c language, can be directly displayed 12864

i2c的代码程序，在５１下调通，稍加修改就可以在其他单片机上实现-i2c code procedures, in 51 pass down a little modification can be achieved in other single-chip microcomputer

本程序有一定的参考价值，内含电路图及程序，有利于单片机开发-This procedure has certain reference value, including circuit diagrams and procedures, in favor of single-chip development

按键控制声音输出，C语言编写，keil下调试通过,大家相互学习-Buttons control the sound output, C language, keil debugging passed, everyone learn from each other

ds18b20和1602液晶显示，能精确读取温度到小数点后两位。-LCD ds18b20 and 1602 can accurately read the temperature to two decimal places.

用3310液晶做的自己做的温度计(51芯片)-3310 make use of their own to do liquid crystal thermometer (51 chips)

这是基于ATMEL89S51上的一个电子时钟源代码程序,有相当完美的注释解说,希望对大家有所帮助.-This is based on the ATMEL89S51 on an electronic clock source code for the procedure, quite a perfect footnote to explain, and they hope to be helpful to everyone.