1_led_driver

stm32输出四路pwm，能完成占空比可调，频率可变化的pwm(Stm32 four road PWM output, can finish the duty ratio is adjustable, can change the PWM frequency)

Depth First Search For Graph

程序主要实现了无线模块nrf24l01传输温度的，功能。(Program achieved a major wireless module nrf24l01 transmission temperature function.)

电子钟例程在MCS51上实现，用于proteus仿真软件(Electronic clock routine)

语音电子门锁C语言程序，STC89C51D+ISD4002应用(Voice electronic lock C language program, STC89C51D+ ISD4002 application)

SDL2_image-2.0.0开发包，方便大家使用(SDL2_image-2.0.0 Development Kit to facilitate the use)

说明：  基于STC51单片机使用UART串口模块通讯例子(STC51 using UART serial port module communication example)

里面包含gx1121和Gx3001型，以及其他一些数字卫星接收机的设计方案，原理图，datasheet！绝对超值！(Which contains gx1121 and Gx3001 type, and other digital satellite receiver design, schematics, datasheet! Absolute value!)

stm32f4范例，双ADC同时采样，通过DMA的双buffer模式传送，希望对初学者有帮助。范例完整，可直接在stm32f4dis上运行，环境nvision5(example for stm32f4dis,used to describe how to set double ADCs sampling simultaneous ,and send the data through the DMA Double buffer mode )

说明：  为快速傅里叶变换用c语言在51单片机中实现(Realization of Fast Fourier Transform with C Language in 51 Single Chip Microcomputer)