可以测量马达的实际转速,用的IC 是AT89C2051,也可以用于AT89C51

数字示波器上的测频电路原理图，已经经过验证可行。-Digital Oscilloscope on the frequency measurement circuit schematics, has been proven feasible.

嵌入式系统中文件系统源代码，很实用，分享之-Embedded System File System source code, it is useful to share the

这个是用muxpulsII制作的有时钟功能的电路是属于数字逻辑的--A circuit with clock function. It is made by muxpulsII and belong to numeric logic category.

在ucos下的一个五子棋游戏，在触摸屏下实现，代码全部由注释。

微芯片dsPIIC30F定时器基本设置示例

主要是通过Linux来进行音乐播放器的设计，使用的是小红帽Linux系统下的qt来进行设计。最终完成了简易的音乐播放器的设计。

Modbus RTU Slave project based on Microchip PIC 16F87X processor and 24LC128 CMOS Serial EEPROM with I2C interface. PIC Modbus RTU slave supports write and read (3 and 16) functions. The data is stored and read from EEPROM via the I2C bus. You can write/read up to 8000 registers. In a single frame can be read/write 32 registers . The program was written in the HI-TECH C compiler-Modbus RTU Slave project based on Microchip PIC 16F87X processor and 24LC128 CMOS Serial EEPROM with I2C interface. PIC Modbus RTU slave supports write and read (3 and 16) functions. The data is stored and read from EEPROM via the I2C bus. You can write/read up to 8000 registers. In a single frame can be read/write 32 registers . The program was written in the HI-TECH C compiler

基于NIOSII的UART的原代码，可以直接运用。可以方便的和其他具有UART的设备无缝连接。 -based on the UART NIOSII the original code can be directly applied. Can facilitate the UART and other equipment seamless connection.

/*温控系统实现功能要求：1在前三个数码管上显示 当前采集到的温度（0-99.9）2当环境温度低于27°c时，蜂鸣器开始以慢"滴"声报警，并且伴随p0.0口发光二级管闪烁（模拟开启制热设备）；当环境温度继续降低并低于25°c时，蜂鸣器以快‘滴’声报警，并且伴随p0.0和p0.1口发光二极管一起闪烁（模拟加大制热设备功率） 3当环境温度高于30时，蜂鸣器以慢‘滴’声报警，并且伴随p0.2闪烁（模拟开启制冷设备）；当环境温度继续升幅并高于32时，蜂鸣器以快‘滴’声报警，并伴随p0.2和p0.3二极管一起闪烁（模拟加大制冷设备） 4用串口将采集的温度数据实时发送给上位机，在上位机软件上显示当温度值*/ //将p2.4和138的j22的1连接