itree

说明窗函数为无限宽时，STFT无时域的定位功能；(Note when the window function for the infinitely wide, STFT positioning without time-domain function )

在stm32平台上实现读取ADXL345的三轴加速度的数据(On the STM32 platform, read the data of the three axis acceleration of ADXL345)

基于StC89C52单片机的nRF24L01驱动及应用程序， 已经调试成功(Driver and application program of nRF24L01 based on STC89C52 MCU has been debugged successfully.)

简单的音乐盒，可以播放音乐，并且有花样灯进行闪烁，是个不错的小礼物。(music box )

Accuracy can reach 98%, Using matlab to calculate the Mahalanobis distance for the image, MinkowskiMethod algorithm.

说明：  基于51单片机的继电器例程，常见问题： 1. 按下按键无效果 确保连线正确 换根杜邦线试试 将单片机拆下来重新安装下，重启开发板(Relay Routine Based on 51 Single Chip Microcomputer, Frequently Asked Questions: 1. Pressing the key has no effect Make sure the connection is correct Try changing the dobang line Remove the microcontroller and reinstall it, restart the development board.)

windows 32位机和64位机逻辑分析仪安装包，使用说明。(Windows 32 bit and 64 bit logic analyzer installation kit, instructions for use.)

AD1939的数据手册，多通路的模数转换器，ADSP21489板上有(AD1939 data manual, multi-channel analog-to-digital converter, ADSP21489 board)

12864液晶显示，采串并形都有 for msp430 x芯片驱动代码 画图都有十分方便使用 。 12864LCD属于点阵图形液晶显示模块，不但能显示字符，还能显示汉字和图形，分带汉字库和不带那字库两种，价格也有差别。(12864 LCD belongs to dot matrix graphics LCD display module. It can display not only characters, but also Chinese characters and graphics. There are two kinds of Chinese character library and non-Chinese character library, and the price is also different. The 12864LCD with Chinese character library is very convenient to use. It does not need to write complex Chinese character display program. As long as two bytes of Chinese character machine code are written in time sequence, Chinese characters can be displayed. The driver is much simpler.)

信号检测 51单片机 通过外部中断检测信号源的脉宽周期频率(51 single-chip signal detection signal detected by an external interrupt source of the pulse cycle frequency)