AT89C51单片机控制LCD12864液晶显示器显示万年历

带Firmaware图像和源代码的全125khz rfid读写器的设计

一个嵌入式linux的驱动程序例子，包含了McBSP的DSP启动例子-An embedded linux driver example, contains examples start McBSP of the DSP

12位DA芯片TLC2543驱动程序 12位DA芯片TLC2543驱动程序-12 DA chip TLC2543 driver 12 DA chip TLC2543 driver

s3c44b0的串口通信设计例子.有发送接收功能-Design s3c44b0 examples of serial communication. have to send receive function

arm的内部启动代码，用来引导linux操作系统。-arm" s internal startup code is used to boot linux operating system.

是上一个SMS消费机的充值机程序，主要用于手持机方面的，这方面的朋友可以下载！是用68K328的处理器！开发环境可找我要！ -SMS is a consumer machine in the lobby machine procedures, mainly for the handhelds, which can be downloaded friends! 68K328 is the processor! Development environment to be approached me!

应用背景本例程序经过一个月的验证和调试，先已经很稳定，能够实现无霍尔有霍尔模式运转，和30度延时换相，脉宽调速等，并且里面还带详细的原理图和学习资料，很适合初学者学习使用。关键技术能够实现无霍尔有霍尔模式运转和30度延时换相脉宽调速，运行很稳定，可用于家电类的电机控制等等。

L298N是ST公司生产的一种高电压、大电流电机驱动芯片。该芯片采用15脚封装。主要特点是：工作电压高，最高工作电压可达46V；输出电流大，瞬间峰值电流可达3A，持续工作电流为2A；额定功率25W。内含两个H桥的高电压大电流全桥式驱动器，可以用来驱动直流电动机和步进电动机、继电器线圈等感性负载；采用标准逻辑电平信号控制；具有两个使能控制端，在不受输入信号影响的情况下允许或禁止器件工作有一个逻辑电源输入端，使内部逻辑电路部分在低电压下工作；可以外接检测电阻，将变化量反馈给控制电路。使用L298N芯片驱动电机，该芯片可以驱动一台两相步进电机或四相步进电机，也可以驱动两台直流电机。-L298N is produced by ST a high-voltage, high current motor driver chip. The chip uses 15-pin package. Main features are: high voltage, the maximum working voltage up to 46V output current, instantaneous peak current up to 3A, continuous operating current of 2A rated power of 25W. Contains two H-bridge high-voltage high-current full-bridge driver can be used to drive DC motors and stepper motors, relay coils and other inductive load using standard logic level signal control has two enable control terminal, input signal without affecting the case to permit or prohibit the device work a logic supply input, so that part of the internal logic circuits at low voltage work can be an external sense res

用cypress cy7c63723实现的USB鼠标。电路图、源代码-Cypress CY7C63723 Encore C-Combi Mouse Reference Design

Nucleus系统介绍文档，其中介绍了实时系统的任务处理与抢占处理等。-Introduction Nucleus system documentation, which presents the real-time systems deal with the mission to seize such treatment.