Dot Matrix LED electronic display in producing simple, easy installation, are wi...

GPUSPH is an implementation of Smoothed Particle Hydrodynamics for free surface flows (Monaghan, 1994, 2005) on a Nvidia graphics card. In this application, the fluid can be water or a more viscous substance like lava (see also GPU-LAVA).

高斯有色噪声，有色噪声的谱估计及其在雷达中的应用(gauss noise)

基于PICC语言的超声波测距模块的使用，测量距离并用LED显示。(The use of PICC-based ultrasonic ranging module can measure the distance and display it with LED.)

西南交通大学图形学实验，时钟的实验源代码(Southwest Jiaotong University graphics, the clock)

        private void StopRectTimer_Tick(object sender, EventArgs e)        {            //如果鼠标在窗体上，则根据停靠位置显示整个窗体              if (this.Bounds.Contains(Cursor.Position))            {                switch (this.StopDock)                {                    case AnchorStyles.Top:                        this.Location = new Point(this.Location.X, 0);                        break;                    case AnchorStyles.Bottom:                        this.Location = new Point(this.Location.X, Screen.PrimaryScreen.Bounds.Height - this.Height);                        break;                    case AnchorStyles.Left:                        this.Location = new Point(0, this.Location.Y);                        break;                    case AnchorStyles.Right:                        this.Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, this.Location.Y);                        break;                }            }            else  //如果鼠标离开窗体，则根据停靠位置隐藏窗体，但须留出部分窗体边缘以便鼠标选中窗体              {                switch (this.StopDock)                {                    case AnchorStyles.Top:                        this.Location = new Point(this.Location.X, (this.Height - 3) * (-1));                        break;                    case AnchorStyles.Bottom:                        this.Location = new Point(this.Location.X, Screen.PrimaryScreen.Bounds.Height - 5);                        break;                    case AnchorStyles.Left:                        this.Location = new Point((-1) * (this.Width - 3), this.Location.Y);                        break;                    case AnchorStyles.Right:                        this.Location = new Point(Screen.PrimaryScreen.Bounds.Width - 2, this.Location.Y);                        break;                }            }        }

character lcd code for 8-bit interface

一个经典的MVVM案例，非常有利于新手学习(A classic MVVM case is very helpful for beginners to learn.)

数字集群信道编解码程序，包括BCH和RCPC,属于欧洲ETSI Tetra标准。(digital trunking channel coding and decoding procedures, including BCH for RCPC and, European ETSI Tetra standard.)

通过解析网页中的内容，提取网页中的URL地址，供进一步分析。通过正则表达式，分析网页内容。程序是通过C#语言编写的，大家可以进一步扩展，里面不是可执行文件，而是定义的类文件。

摘要 电能表作为用电量的测量工具广泛的应用于各种场合。在电能表校表系统中,需要的最基本的输入信号源是高精度双路正弦信号源,并要求可对其频率、相位、幅值进行调节,来对电能表进行校准。 基于单片机的程控信号源设计，运用数字调相、数字调幅和数字调频等技术，要求实现相位、幅度、频率的高精度程控调节。本文设计了一种利用锁相环频率合成技术和数字波形合成技术组成的程控低频正弦波信号发生器，并给出了调幅、调频、调相的实用电路，频率调节通过改变8253计数器的分频系数来实现；相位调节由51单片机预置计数器的计数初值来完成，幅度的调整通过改变DAC1210II的参考电压来实现，使频率分辨率达0.01Hz,相位调节精度达0.1°，并介绍电路中的主要芯的功能及使用。输出正弦波频率和幅值的精度高，稳定性好，失真度低，电路简单、可靠、便于程控。 关键词：数字合成信号源；程控；调幅；调频；移相； (Abstract Meter consumption as the size of the measurement tool is widely used in various occasions. In single-phase power meter verify system, the most basic needs of the input signal is the source of two-way high-precision sine signal source, and may request its frequency, phase, amplitude in a certain step to adjust to the imitate of the actual electricity load with a right meter calibration. Design of the programmable signal supply controlled source，which based on the MCU，including digital phase adjustment，distal amplitude adjustment，digital frequency adjustment etc．The system should achieve high quality digital adjustment of phase, amplitude and frequency. This paper describes the use of a PLL frequency synthesizer technology, and digital wave form synthesis technology consisting of program-controlled low-frequency sine wave signal issued devices, and applies the amplitude， frequency， phase of practical circuit. Frequency can be adjusted through a change in the 8253 counter-frequ)