QPR_Control

GD32F303系列输出任意数量脉冲，频率数量都可控(GD32F303 series output any number of pulses, the frequency and quantity can be controlled.)

The HIH-3610 Series humidity sensor is designed specifically for high volume OEM (Original Equipment Manufacturer) users. Direct input to a controller or other device is made possible by this sensor’s linear voltage output. With a typical current draw of only 200 mA, the HIH-3610 Series is ideally suited for low drain, battery operated systems. Tight sensor interchangeability reduces or eliminates OEM production calibration costs. Individual sensor calibration data is available. The HIH-3610 Series delivers instrumentation-quality RH (Relative Humidity) sensing performance in a low cost, solderable SIP (Single In-line Package).

0~999数码管和164串入并出显示的汇编编程()

这是一个SPI 接口的1.8寸TFT操作的源代码，液晶屏控制器为ST7735,里面附带ST7735资料(This is an SPI interface 1.8-inch TFT operation of the source code, the LCD screen controller ST7735, ST7735 with inside information)

说明：  实现STM32F4的USBhost功能，使用uvc协议与USB摄像头通讯。(Realize the USB host function of STM32F4 and communicate with USB camera using UVC protocol.)

利用c51单片机实现计算器的功能 例如：普通的加减乘除，还有2进制等功能(C51 MCU using calculator functions such as: ordinary addition and subtraction, multiplication and division, there are two binary functions)

说明：  基于stm32单片机的LCD5110驱动例程(LCD 5110 Driver Routine Based on STM32 MCU)

2440的原理图，sch格式的，非PDF，欢迎下载(2440 schematic diagram, sch format, not PDF, welcome to download)

msp430，超低功耗的好选择，数据手册，留存待用(Msp430, a good choice for ultra-low power consumption, datasheet chinese version, reserved for use)

说明：  两脉冲频率平均值计算 两脉冲频率平均值计算 两脉冲频率平均值计算(Two pulse frequency average of the two pulse frequency average of two average pulse frequency)