在C51下编写的频率计函数，可以对测得输入信号的频率

本代码是本人毕设所做的GPRS数传系统的软件部分，实现了PPP，UDP，IP协议的分层和打包，实现了嵌入式设计中的UDP/IP协议栈-the code is completed, I set up the GPRS data-transmission system software, to achieve the PPP, UDP, IP protocol layering and packaged to achieve the design of embedded UDP/IP protocol stack

四相步进电机正反转驱动原代码，汇编语言编写-Positive four-phase stepper motor driver source code, compiled languages

jlink的FLASH参数配置工具，自动生成CSV格式的文件，用于自己添加新的FLASH型号。-jlink the FLASH parameter configuration tool that automatically generates CSV format file, add a new FLASH for its own models.

继续上传：单片机89C51，LCD12864菜单程序。-Continue to upload: Singlechip 89C51, LCD12864 Menu Programs.

摘要 文中提出用DDS芯片AB9852实现QAM数字调制的新方法，扩展AB9852在数字调制方面的应用。 。 ． 关键词 QAM调制 单片机 DDS -Abstract In this paper, using DDS chip QAM digital modulation AB9852 realize the new method, the expansion of AB9852 in the digital modulation applications. . . Key words single-chip QAM modulator DDS

C51语言编码设计规范，说的很详细的。-C51 coding design specifications, said the very detailed.

学习例程，共有100例，测试成功，在此上传工大家学习提高-Learning routines, a total of 100 cases, testing the success of workers in this upload them to learn to improve

单片机C语言编写的电子密码锁，可以自己设置密码-Single-chip C language electronic locks can be their own password

51单片机采集DHT11温湿度传感器的温湿度值的测试程序源码，测试通过-51 SCM Acquisition DHT11 temperature and humidity values of temperature and humidity sensor test program source code, test