LWIP版本更新

学生管理系统，记录学生的各种信息。方便管理。-Student management system to record all kinds of information the students. Easy to manage.

AVR ATmega128的芯片AGV项目测试计划，这是AGV与掘进2直流无刷电机这是通过反馈霍尔传感器，直流电机具有150W的峰值功率，希望这是对您有用

函数发生器是一种在科研和生产中经常用到的基本波形产生器，集成函数 波形发生器一般都采用ICL8038或5G8038，而它们只能产生300kHz以下的中低频正弦波、矩形波和三角波，且频率与占空比不能单独调节，从而给使用带来很大不便。本文介绍由LM324和稳压管组成的低频函数波形发生器，该电路能够产生正弦波、方波和三角波信号，频率能以10Hz的间隔在20Hz～20KHz范围内调整。-Function Generator is a scientific research and production often use the basic waveform generator, integrated function waveform generator usually used ICL8038 or 5G8038, and they only have a 300kHz following the low-frequency sine wave, square wave and triangular wave, and frequency and duty cycle alone is not regulated, so as to enable using bring a lot of inconvenience. This paper introduces the LM324 voltage regulator tubes, and the low-frequency waveform generator function, the circuit can produce sine, square and triangular wave signal frequencies of 10Hz to 20Hz at intervals within ~ 20KHz adjustment.

液晶自模点阵提取软件-dot matrix LCD module from the extraction software

介绍一种基于摄像头的智能车自动控制器设计方案。以飞思卡尔16 位单片机为核心控制单元，使用红外光电传感器采集路径信息，控制智能车的舵机、驱动电机，实现智能车的自主寻迹行驶。 -Introduction of a camera-based automatic control of intelligent vehicle design. Based on Freescale 16-bit microcontroller as the core control unit, the use of infrared photoelectric sensor acquisition path information, control, intelligent vehicle steering gear, drive motors, autonomous intelligent vehicles driving tracing.

嵌入式设备上的Linux系统的开发，非常好非常好的资料-embedded devices on the Linux system development, very good very good information

采用一个标准的基准时钟，在单位时间如1S里对被测信号的脉冲数进行计数，即为信号的频率，由于闸门的起始和结束时刻对于信号来说是随机的，将会有脉冲周期的量化误差，进一步分析测量准确度。因此直接测频法只适合测量频率较高的信号，不能满足在整个测量频段内的测量精度保持不变的要求。若要得到整个频段内较高的精确度，应该考虑等精度测量等其他方法。

单片机菜单实现，3层菜单，能实现翻页跳转等，使用的控制器是DMX512控制器 液晶屏采用HT1286418模块，代码高效而简练，是不可多得的嵌入式菜单实现。

嵌入式多任务实时操作系统培训教材-embedded multi-tasking real-time operating system of training materials

FPGA开发板的原理图很详细的，主要是ALTERA公司的CYCLONE，用protel画的，-FPGA development board schematic diagram of a very detailed, mainly ALTERA company CYCLONE, using Protel painting,