BQ25985

说明：  这是关于8路模拟开关CD4051芯片的代码，代码很简单，经过测试，完全可以在程序中使用，(this is about the analog chip CD4051,the code is very easy,so you can use it in you program.)

双步进电机综合控制 用于51单片机 (Dual stepper motor integrated control)

集成vco，adf4350 adf4351 驱动程序(Integrated vco, ADF4350 adf4351 driver)

仿真程序数控机床，数控机床，以模仿实际操作，有有一定的价值，很多共享！,可以直接使用。 (Simulation program CNC machine tools, CNC machine tools, to mimic the actual operation, the value of many shared Can be used directly.)

485通讯程序大全485通讯程序大485通讯程序大全全485通讯程序大全(485 procedures for a large program Daquan 485 485 485 total communication program procedures Daquan Daquan)

stm32单片机使用sim900a模块进行gprs通信(the stm32 Microcontroller use sim900a module gprs communication)

说明：  STM32F103 HAL库串口应用例程(STM32F103 HAL Library Serial Port Application Routine)

网上有许多关于DM9000网卡芯片的介绍，然而这些介绍大多是关于Linux或WinCE下的驱动程序或移植，很少有介绍单片机驱动DM9000的例子。本文详细介绍了调试DM9000E的过程，仅供参考。(There are many online card chip on the DM9000 introduction, however, most of these presentations are on Linux or WinCE driver or under the transplantation, very few examples of introduced Microprocessor DM9000. This paper describes the process of debugging DM9000E for reference purposes only.)

说明：  基于光敏电阻的路灯控制电路。在单片机的基础上，用光敏电阻控制led亮灭。(Street lamp control circuit based on photoresistor. On the basis of MCU, the LED is controlled by photoresistor.)

说明：  ASCII码字库，包括12*12，24*24，32*32(ASCII codeword library, including 12*12, 24*24, 32*32)