ds1302

stc89c52单片机驱动蜂鸣器的程序，延时函数用定时器方式编写。(stc89c52 MCU-driven buzzer procedures, with the timer delay function approach to the preparation.)

通过使用能。Keil 51工具和VC++来实现按键的功.(Achieved by using the Keil 51 tools and VC++ of the key functions.)

说明：  正点原子STM32F103精英板按键输入例程(Punctual Atom STM32F103 Elite Board Key Input Routine)

本软件包是基于AVR单片机设计的计算器的应用程序示例。(AVR)

c语言编写的RS485 MOUBUS通讯代码，运行平台STM32F103C8T6(RS485 MOUBUS communication code written in C language, running platform STM32F103C8T6)

1602显示姓名首字母和生日 1602 Displays initials and birthdays(1602 Displays initials and birthdays)

交通信号灯的功能与实现，自己做的，注意端口(stc89c52rc keil)

ADLINK PCI系列的编程文档，利用板卡实现数据采集、控制等要求时必不可少(ADLINK PCI series of programming documents, the use of cards for data acquisition, control and other essential requirements)

利用Keil C51 和LabVIEW编写程序实现PC与单片机串口通信。 设计任务 PC通过串行口将数字（00 ，01 ，02，03... ，FF，十六进制）发送给单片机，单片机收到 后回传这个数字，PC接收到回传数据后显示出来，若发送的数据和接收到的数据相等，则串 行通信正确，否则有错误。启始符是数字00，结束符是数字 FF。(Use Keil C51 and LabVIEW programming to achieve PC serial communication with microcontroller. Displayed after the PC via the serial port design task digital (00, 01, 02,03 ..., FF, hex) is sent to the microcontroller, the microcontroller receives return this figure, PC receives the return data , if the data sent and received data are equal, the serial communication is correct, otherwise an error. Startup character is a number 00, the end of the character is a number FF.)

21天学通51单片机开发源代码，学习51单片机的教材，值得下载(21 Days 51 MCU development of source code, 51 MCU learning materials, worth downloading)