ADNS3080Demo

通过反转法循环扫描矩阵键盘，并通过数码管显示数据(By inversion method cyclic scan matrix keyboard, and through the digital display data)

使用51单片机控制LED灯，实现交通灯功能。(The use of 51 single-chip computer to control the LED lights to achieve the function of traffic lights.)

FixedWidthTest extends ActivityInstrumentationTestCase.

三星单片机 S3F84U8使用IAR编译器_按键识别-提高篇(Samsung SCM S3F84U8 using the IAR compiler _ identification keys- to improve articles)

单片机计算机设计，实现加减乘除，包括小数点的运算，用的是4*4的键盘(Single chip computer design, realization add, subtract, multiply and divide, including the operations of the decimal point, with 4* 4 is the keyboard)

1、ADO技术 2、用对话框显示图片 3、对话框动态伸展(1, ADO technology 2, with a dialog box is displayed pictures 3, the dialog dynamic extension)

STM32L152的定时唤醒程序,唤醒之后PB10LED闪烁(STM32L152 timer wake-up program, wake up after PB10LED flashing)

1.东西方向、南北方向均有红、黄、绿三种信号灯； 2.东西干道和南北干道，绿灯下情况通行，红灯情况下不行，黄灯情况下 慢行； 3.东西干道和南北干道交替控制； 4.实时提醒绿灯亮的剩余时间； 5.通行时间可调； 6.雾霾或夜间模式按钮按下，所有方向显示黄灯.(1. there are three red, yellow and green lights in east-west direction and north-south direction. 2. the East West trunk road and the north-south trunk road pass under the green light. 3. East and west main road and the north and South Main Road alternately control; 4. reminding the remaining time of the green light in real time; 5. the time can be adjusted; 6. haze or night mode button is pressed, all directions show yellow light.)

滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)

这是一个关于三电平svpwm的程序,对于我们学习三电平有很大的好处(This is one of the three level SVPWM procedures, for us to study the three level is very good)