led

it is program for led matrix

SD卡2.0协议的详细资料，可用与SPI使用(The details of the SD card 2.0 protocol can be used with SPI)

AD转换资料，超全大量AD采集电压以及采集电流的方法！(AD conversion data, a large number of ultra-wide voltage and collected current AD acquisition method!)

C语言编程，4X4键盘扫描程序，可以直接使用到51单片机中(C language programming, 4X4 keyboard scanner can be used directly in the 51 SCM)

PWM调光 1、学习目的：利用定时器产生PWM，了解原理和使用方法 2、硬件要求：LED灯 定时器 3、试验现象：LED灯由亮到灭，由灭到亮逐步变化，也就是调光现象(PWM dimming, learning objectives: the use of the timer to generate PWM understand the principles and use hardware requirements: LED lamp timer test phenomenon: LED lights from bright to off, gradually changes from off to bright, that is, adjusted optical phenomena)

MultiThread DB - ADO CMTDaoDatabase CMTDaoRecordset

讲解 角度传感器的原理，内部结构，引脚功能，以及相关运用(Angle sensor to explain the principles of the internal structure of pin functions, and related use)

这是个用矩阵键盘控制步进电机圈数和转速的程序，参数设定在触摸屏上显示(This is a matrix keyboard to control the stepper motor number of turns and speed program parameter settings on the touch screen display)

通过上位机来控制LED显示的数字内容，主要是动态显示数字变化情况(Through the host computer to control the LED display digital content, mainly dynamic display of digital changes)

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