200684154022

RTK精密定位中的后处理程序，包含数据保存和输出的功能(RTK precision positioning in the post-processing procedures, including data storage and output functions)

一线显示,把电源跟数据线结合起来,减少了通讯连线.控制程序是C51的.(Line shows that the power supply combined with the data lines to reduce the communication connection. Control procedures are in C51.)

中国海域潮汐预报软件Chinatide的应用(China Sea tide forecasts Chinatide application software)

说明：  msp430f169单片机的主从spi通信。经过测试，通信成功(communications between msp430)

测控电路实现的是电路的测试和控制，好用请大家光临还有我是新手还请大家多多关照我这个新手(Measurement and Control)

NRF24L01Information Program(NRF24L01 Information Program)

这是一个为数不多的用C语言编写的PIC12C508的RGB灯的小型控制器，交流同步信号检测，七彩跳变+七彩渐变，做LED的朋友可以参考，程序可以直接使用的；(This is a small controller RGB lights a few written by C PIC12C508, AC synchronous signal detection, colorful jump+ colorful gradient, do LED friends can reference, the program can be used directly )

ME850单片机开发实验仪演示程序 - LCD1602显示 基于 c51系列的单片机程序，用AT89S52延时通过(ME850 SCM experimental instrument demo- LCD1602 display based on c51 series SCM process, using AT89S52 delay through)

MICROSOT 做ACTIVE MOVE FLASH的东东,此说明是其SDK的一部份(MICROSOT make the ACTIVE MOVE FLASH Dongdong, this note is a part of its SDK)

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)