VHDL与源代码包

基于FPGA的1602时钟显示,驱动1602显示时钟,矩阵键盘调时(1602 FPGA-based clock display, clock display driver 1602, when the transfer matrix keyboard)

在电子产品中，加法器是一种数字电路，执行加法的数字。在许多计算机和其他种类的处理器，加法器使用不仅在算术逻辑单元（s），而且其他地方的处理器，

xc3s400芯片详细的英文资料，xc3s400的FPGA开发板使用者必看-chip xc3s400 detailed information in English, xc3s400 the FPGA development board users see

这个程序是基于等精度测频原理的频率计，用VHDL语言实现，频率测量测量范围1~9999；用4位带小数点数码管显示其频率，并且具有超量程、欠量程提示功能。-This procedure is based on the principle of frequency measurement accuracy, such as the frequency meter, using VHDL language, frequency measurement range 1 ~ 9999 with four decimal places with the frequency of the digital display and has a super-range, less range prompts.

使用信号功率计算，检测信号是否到达。从而控制后续模块，以减小系统功耗。(Signal power calculation, the detection signal to reach. To control follow-up modules to reduce system power consumption.)

基于ＦＰＧＡ平台，实现了直接数字频率合成。-FPGA-based platform, to achieve a direct digital frequency synthesis.

DDR2 SDRAM仿真模型，适合于ModelSim下工作，请先阅读readme-DDR2 SDRAM Simulation Model which is suitable for modelsim. Please read readme file firstly.

异步串行传输的verilog hdl 功能文件以及测试文件(The verilog hdl source and the testbench of asynchronous serial transmission )

数字钟蜂鸣器音乐——爱情买卖，很时尚的闹钟音乐代码，经测试，很有感觉。(Digital clock buzzer music- love trading, very stylish alarm clock music code, tested, great feeling.)

VGA字符显示VHDL程序 可以直接用于工程的设计与开发-VGA display characters can be directly used for VHDL design and development