这个程序利用89S51演奏生日快乐的歌曲 */

一些常用的c51源码，编程时可以参考。-some frequently used source decoder, the reference can be programmed.

使用主模式I2C向CAT24WC02写入10字节数据，然后读出校验，若校验通过则BEE发声，否则不断BEE。 基于ADS1.2-use the main mode I2C CAT24WC02 to write 10 bytes of data, and then read out the check, if the check is through BEE audible, constantly BEE. Based on ADS1.2

单片机扩展flash盘-SCM flash disk expansion

STC单片机的在线下载功能的ISP原代码-STC MCU ISP online download function of the original code

单片机扫描状态机的程序实现，希望能帮助到有需要的朋友。-Single-chip state machine to scan the program, hoping to help a friend in need.

标准51单片机用定时器产生PWM波形实现led渐亮渐灭-Standard 51 MCU generate PWM waveforms using Timer led gradually to achieve gradual eradication of light

RTC8563时钟芯片的读写程序，大家共享。

简易数字电压表可以测量0-5V范围的8路电压值，并在4位LED数码管上轮流显示或单路选择显示。-Simple digital voltage meter can measure the range of 0-5V Voltage road 8, and 4 digital tube LED display on a rotational basis or choose to display a single road.

用于串口通信的源代码 用c编程的程序 希望对大家有用-for serial communication with the source code c programming procedures hope useful for all

单片机开发，通过1302 18b20 1602液晶显示器，实现闹钟的功能-Single-chip development, through the 1302 18b20 1602 LCD, the realization of an alarm clock function