duojitongxin

用于水文频率计算的目估适线法,程序基于φ值表查询计算(Mesh used to calculate estimates of hydrological frequency fitting method)

对STM8L151各个功能模块测试程序,十分方便初学STM8L151各个功能有IO中断,中断唤醒,定时中断,串口接收发送,AD转换程序,SLEEP模式(STM8L151 each function module test program, very convenient beginners STM8L151 each function is IO interruption, interrupt, timer interrupt, serial port receive send, AD converter, the SLEEP mode)

中航信ETERM放大器，C++ 支持350，443端口，分享一下，一起学习(CNAC letter ETERM amplifiers, C++ 350,443-port, share, learn together)

使用红外遥控调整时间并用12864液晶显示的王年丽时钟程序(Infrared remote control 12864 to show big clock)

单片机音频通信9170和9200，接收发送源程序(9170 and 9200 microcontroller audio communication, the receiver sends source)

ht1621驱动C语言版本,基本是一个通用的版本(ht1621 driver C language version of the basic version is a generic)

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)

A， 单发单收，在发送状态，能够连续发送从0到99的数字； B， 单发单收，在接收状态，能够接收数据，并在数码管上正确地显示出来； C， 单发多收，在AB完成的基础上，接上多个接收设备，能够正确发送和接收 这是从站2的代码(A, single-input single in the sending state, capable of continuously transmitting a number from 0 to 99 B, single-input single in the receiving state, capable of receiving data, and display correctly in the digital tube out C, single overcharged, on the basis of AB completed, connect multiple receiving devices, capable of sending and receiving the correct code from the station which is 2)

利用MFC编写的can测试界面，可以对can数据进行设置以及收发测试(Using MFC to write the can test interface, you can set up can data, as well as send and receive tests)

通过使用能。Keil 51工具和VC++来实现按键的功.(Achieved by using the Keil 51 tools and VC++ of the key functions.)