zuijiaquanxiangliang

数字系统设计报告，多功能电子钟，显示年月日星期时分秒，及校时等功能(Digital system design report, multi-functional electronic bell, show date when the minutes and seconds a week, and school functions when)

c8051f020单片机的12864液晶显示 4行汉字 很简单的改变(c8051f020 microcontroller 12864 LCD 4 lines of Chinese characters is very simple change)

用C8051F020实现正弦波的程序设计(Program designed to use the C8051F020 achieve sine wave)

关于AVR的一个I/O仿真I2C的源程序(On the AVR an I/O simulation I2C source)

说明：  基于vivado实现的具有数据选择器功能的ip(base on vivado mux2_to_1)

msp430g2553利用定时器产生多路可调占空比PWM(Make PWM by MSP430G2553.)

A C code and hardware for a wall clock

说明：  stm32例程 用于学习目的 例程为stm32g系列 若其他系列需修改gpio引脚(STM32 routine is used for learning. The purpose routine is stm32g series. If other series need to modify GPIO pin)

底层调用了PCSC的通信库Winscard，可用于PC上读卡器与智能卡的通信(It calls the underlying communication library Winscard PC can be used on a PC to communicate with the smart card reader)

An effecient algorithm has been proposed by Schmidl and Cox for carrier frequency estimation in orthogonal frequency-division multiplexing systems. The scheme is based on the transmission of a training symbol composed of two identical halves in the time domain. In this paper we extend this algorithm by considering a training symbol composed of L>2 identical parts. This makes it possible to achieve a better accuracy at the cost of some increase in computational load. The estimation range can be made as large as desired without the need of a second training symbol, as required by the Schmidl and Cox method.