ui1rjnLVhlRkHIXxFb47XVdYUOPzuO7NzWmQd2eORhoP4TDej

小护士脉搏监护仪全套系统，包括程序，电路图，波形，参考资料等，还有和PC的matlab通信部分，一应俱全。(Small nurses monitor the pulse of a full set of systems, including procedures, circuit diagrams, waveform, reference materials, as well as and the PC part of matlab communication services.)

Zwicker响度计算公式，ISO 532B(Zwicker loudness calculation formula, ISO 532B)

stm32通过计数器测频率，很好的资料，希望帮到大家。(Stm32 through the counter measurement frequency, good information, hope to help you.)

keil4 89c52 MAX7219点阵原理图.pdf MAX7219英文.pdf MAX7219中文.pdf MAX7219.uvproj max7219.hex(keil4 89c52 MAX7219Lattice schematic diagram.pdf MAX7219EN.pdf MAX7219CN.pdf MAX7219.uvproj max7219.hex)

C51的USB接口程序，测试通过！包含部分FAT文件系统程序(C51 of the USB interface program, test! Contains part of the FAT file system program)

用于arduino单片机驱动错误的修复。如电脑无法识别。或被电脑识别为usb设别而非串口。(t is used to repair driving errors of Arduino single chip computer. If the computer can not recognize. Or it can be recognized as a USB device rather than a serial port by a computer.)

I have uploaded the file management in Operating System. it can be refereed for the more information how files are handled in operating systems.

STM32 I2C 封装库1 – 查询方式 STM32 I2C 封装库2 – 中断方式 STM32 I2C 封装库3 – DMA方式 (STM32 I2C package library 1- ways to search for STM32 I2C package library 2- interrupt STM32 I2C package library 3- DMA mode)

keil软件开发，基于89c52单片机的pwm控制直流电机，通过4*4按键设置pwm值，并且在1620上显示出pwm的值。(Keil software development, 89C52 MCU PWM control of DC motor based on PWM by setting 4*4 key values, and in the 1620 shows the value of pwm. )

说明：  周立功EASYarm板所带出厂程序，包含按键，LED，蜂鸣器，AD转换的代码(ZLG EASYarm board brought the factory process, including buttons, LED, buzzer, AD conversion code)