44b0 uclinux 键盘驱动程序源代码

嵌入式系统的重要概念-Embedded System important concepts

代码为linux下关于pci_skel驱动,程序比较简单,但结构比较清晰,对刚学习 LINUX下驱动开发人员很有帮助-Code for pci_skel drivers under linux, the program is relatively simple, but relatively clear structure, just under the drive to learn LINUX Developer helpful

此电路为计时器电路设计原理图，学习交流中-timer circuit to circuit design drawings, learning exchanges

步进电机控制系统 ，DOC内有原理图，注释-stepper motor control system, DOC has diagram Notes

该数控直流电流源以精密压控电流源为核心、用单片机、DAC组成控制电路，引入“S类”反馈控制功率放大电路，实现超精密电流控制、具备精准的扩流能力、低失调、有步进、同时带有 丰富扩展功能的精密电流源。经过ADC采样，完成输出电流显示功能，并使输出范围覆盖0～2A，是理想的电流源解决方案。-The CNC precision DC voltage-controlled current source to current source at the core, with single-chip, DAC control circuit components, the introduction of " S-type" feedback control circuit power amplifier to achieve ultra-precision current control, with precise flow capacity expansion, low disorder, there is stepping at the same time and expanded with rich precision current source. ADC sampling after completion of output current display, and output cover 0 ~ 2A, the current source is an ideal solution.

两块单片机模块，在这两块单片机上焊接上蓝牙主从模块，以及数码管和蜂鸣器，并且有温度传感器，在温度发生变化后，单片机1向单片机2发送电平信号，实现通信，并且发出相应的警报。

LINUX嵌入式VMWARE的集成开发环境的搭建文章，对大家大有裨益！ 谢谢！费时两个半小时！-LINUX Embedded VMWARE integrated development environment to build the article of great benefit to everyone! Thanks! Time-consuming two and a half hours!

c source code for microchip pic

基于snd1c芯片的mp3播放器源代码-snd1c chips based on the MP3 player source code

Linux 操作系统提供进程间通信（IPC）机制，用来保证正在执行的进程在内核的协调下能够 共享资源、同步以及交换数据等。Linux 支持大量进程间通信机制，包括信号、等待队列、管道 以及Unix 系统V 中提供的进程间通信机制，如消息队列、信号量和共享内存。-Linux operating system to provide inter-process communication (IPC) mechanism used to ensure that the process is being implemented in coordination with the core to share resources, synchronization and exchange information. Linux support a large number of inter-process communication mechanisms, including signal and wait for the queue, pipeline and the Unix System V to provide inter-process communication mechanisms, such as message queue, the signal volume and shared memory.