飞利浦51LPC系列单片机对交流电机控制的电路原理图和源程序

STM32实现读卡器功能,适用于STM32E-EVAL开发板-STM32 card reader function to achieve for STM32E-EVAL development board

程控增益线性脉冲放大器的设计。 设计了一种新型程控增益线性脉冲放大器。采用准高斯CR2RC2CR 成形电路结构,使用非易失性数字电位器和精密运放,使电路结构大大简化,抗干扰能力强,增益多级连续变化平稳,且具有温漂低、脉冲线性好等特点-Programmable gain linear pulse amplifier design. Design a new type of programmable gain linear pulse amplifier. Using quasi-Gaussian CR2RC2CR forming circuit structure, the use of non-volatile digital potentiometers and precision operational amplifier, so that greatly simplify the circuit structure, anti-jamming, multi-stage continuously variable gain stable, and has a low drift, pulse linear good characteristics

传感器应用实例电路设计150例，资源共享，敬请使用！-Sensor circuit design application 150 cases, resource sharing, please use!

该模拟器是在Keil7.0中使用。 只要把Ex02Dll.dll复制到 X:KeilC51BIN目录下。 打开测试程序，编译运行即可看到如图led.jpg中所显示的效果。-The simulator is used in Keil7.0. As long as Ex02Dll.dll copied to the X : Keil C51 BIN directory. Open test procedure, compile operation can be seen in figure led.jpg reflected by the results.

时间+温度用液晶12864显示，欢迎大家共享-Time+ temperature display with LCD 12864, please share! ! ! !

Silicon Laboratories C8051F320/1单片机例子，PC端调试程序以及驱动程序。-Silicon Laboratories C8051F320/1 Singlechip example, PC-side debugging procedures, as well as drivers.

利用PWM产生高精度正弦波,从PWM引脚输出的脉冲信号经过简单的低通滤波后,可以得到平滑的正弦波,波的频率可以微调-produced using high-precision sine wave PWM, PWM output pin from the pulse signal through simple low-pass filter, can be smooth sine wave, the wave frequency can be fine-tuned

这是监视器行业常见的键盘与球机通讯协议的C语言源代码-This is a common keyboard monitor industry with the ball machine communication protocol C-language source code

采用反正法扫描方法对4X4矩阵式按键进行扫描，判断是哪个按键按下。-Scanning method used in any case law on the 4X4 keypad matrix scan to determine which keys are pressed.

本文件为单片机的延时子程序，采用8051f040系列单片机，供单片机初学者学习使用。-This document is for single-chip delay of the subroutine, the use of single-chip 8051f040 series for beginners to learn the use of single-chip microcomputer.