Electronic clock and simulation of VHDL procedures vhdl source code

说明：  基于fpga的DDS程序 可输出正弦波 方波 三角波 锯齿波(DDS program based on FPGA can output sinusoidal square wave triangular wave sawtooth wave)

基于fpga和dsp架构的gps接收机的设计和实现(Design and Implementation of gps Receiver Based on fpga)

基于VHDL的数字计时器，手动可控正计时和倒计时(含复位键和使能键)(VHDL-based digital timer and countdown timer being controlled manually (with the reset button and enable key))

卷积码（213）的编译码，VHDL语言编写的整个工程文件，带有仿真结果图。(Convolution code (213) codec, VHDL language of the whole project file with the simulation results shown in Fig.)

用verilog编写的分辨率提高的源代码 采用双线性插值(Written resolution with the verilog source code to improve the use of bilinear interpolation)

软件开发环境：ISE 7.1i 仿真环境：ISE Simulator 1. 这个实例实现通过ISE Simulator工具实现一个具有两个方向共八个灯的交通灯控制器； 2. 工程在project文件夹中，双击traffic.ise文件打开工程； 3. 源文件在rtl文件夹中，traffic.v为设计文件，traffic_tb.tbw是仿真波形文件； 4. 打开工程后，在工程浏览器中选择traffic_tb.tbw，在Process View中双击“Simulation Behavioral Model”选项，进行行为仿真，即可得到仿真结果。-Software development environment: ISE 7.1i simulation environment: ISE Simulator1. Realize this instance through the ISE Simulator tool to achieve a total of eight lights in both directions of traffic lights controller 2. Works project folder, double-click traffic.ise Open the project document 3. rtl source file in the folder, traffic.v for design documents, traffic_tb.tbw is the simulation waveform files 4. to open a project, the project browser, select traffic_tb.tbw, in the Process View in the double hit

本文描述了fpga中的亚稳态时如何产生的，以及如何计算亚稳态的平均无故障时间。对了解亚稳态有帮助。-This paper describes the sub-fpga how the steady state, as well as how to calculate the metastable MTBF. The understanding of metastable helpful.

Verilog版的C51核(OC8051)-Verilog version of the C51 core (OC8051)

Frecuencymeter digital, clk frequency 10 MHZ, exhibition in 7 segments

this is the vhdl code for the arithmetic logic unit.enjoy!