51单片机矩阵键盘的设计与调试，建议使用52单片机。

蜂鸣器911报警(汇编),单片机的定时器根据声音的频率来设计-Alarm buzzer 911 (compilation), single-chip timer in accordance with the frequency of the sound design

51单片机的高速串口驱动ucos ii的移植-51 Single-chip high-speed serial drive ucos ii transplant

《单片机高级语言c51应用程序设计》是针对单片机编程专门编写，具有很高专业性。-"MCU Advanced Language decoder design applications" was due to the preparation of specialized microcontroller programming with the highly professional.

C51单片机端，实现收到的HEX代码转换为BIN代码，并写入ROM中。-C51 single-chip client, realize received HEX code convert BIN code and write ROM.

《单片机C语言编程与实例》的代码,使用keil编程环境,供大家参考- Microcontroller C programming language and examples of code, using keil programming environment, for your reference

无线模块nrf2401驱动程序，介绍了NRF2401应用操作的源程序代码-Wireless module nRF2401 driver, introduced the application of the operation of nRF2401 source code

可用于 51系列单片机与触摸屏之间的通讯 （一般用modbus实现通讯）-design for exchange massage both mcu51 and torch pad

时钟PCF8563的51程序,调试过,可以用.-Clock PCF8563 51 procedures, debugging, and can be used.

51单片机的端口应用，绝对能用的，直接是开发板的程序，来下吧-51 port MCU applications, the absolute can be used, direct the development of board process to the next bar

该设备可以循环检测24节2V6V12V蓄电池组，测量精度达0.05 ，测量结果通过RS485方式上传至主监控。采用MODBUS通讯协议。-The device can loop detection 24 2V 6V 12V battery, measurement accuracy of 0.05 , the measurement results through the RS485 upload to the main control means. Using MODBUS communication protocol.