LKT4200

STC单片机IO口模拟RS232测试程序,Keil Cx51应用开发技术中的程序主要的功能是在利用串口调试工具发送一个8bit的数据，而后单片机接收后把这个数据发送给模拟串口(STC Single-chip analog IO port RS232 test procedures, Keil Cx51 technology application development process is essentially the function is in the use of serial debug tools send an 8bit data, and then after the single-chip receive the data sent to the simulation of serial)

Abstract—Selection combining cascaded with maximum-ratio combining (SC/MRC), which is particularly useful when site diversity is available, combined with low-density parity-check (LDPC) codes is able to combat the effects of fading. The biterror rate (BER) expressions of uncoded SC/MRC and SC/MRC with LDPC codes over an independent and identically distributed Rayleigh-fading channel are derived based on the Gaussian approximation approach. These expressions are also applicable to the selection combining and maximum-ratio combining as special cases. The derived expressions are in good agreement with simulation results and approach the density evolution (DE) thresholds. These expressions are able to achieve a significant reduction in computational time with a reasonable accuracy for analyzing the BER performance as compared to simulations and DE.

基于nuc900的读以太网程序源代码。可作为参考和移植。(Based on the nuc900 read Ethernet program source code. Can be used as reference and transplantation.)

说明：  物联网系统的stm32开发代码，包含一氧化碳，温湿度(Internet of Things System)

提供STM32F4的硬件I2C配置,直接包含即可用.开发环境为MDK,(Provide STM32F4 hardware I2C configuration, you can use the included directly. Development environment for the MDK,)

STM32的GPS模块通过串口连接的实验，可以通过液晶显示GPS信息，包括精度、纬度、高度、速度、用于定位的卫星数、可见卫星数、UTC时间等信息。(STM32 GPS module via a serial connection test, you can display GPS information, including precision, latitude, altitude, speed, number of satellites for positioning, number of visible satellites, UTC time and other information through the LCD.)

Control module for a Sony projector

Seekers导引头模型仿真C++源码；内含Seeker仿真模块、导引头电机环节、导引头PID环节等。(Seekers seeker model simulation C++ source containing Seeker simulation module, motor aspects seeker seeker PID link and so on.)

说明：  51单片机控制的超声波测距程序，内含一个步进电机驱动，可以驱动步进电机改变方向，画好了pcb板(The ultrasonic ranging program controlled by single chip microcomputer contains a stepping motor driver, which can drive the stepping motor to change direction and draw the PCB board)

应用51单片机写的蜂鸣器的祝福歌,里面有详细的代码(51 microcontroller blessing song written by buzzer)