VHDL的基本程序，可以用来驱动键盘，功能强大，虽然和基础

数字钟，简单的数电应用，电子表源程序，常用也使用-watch

说明：  Quartus II TimeQuest 时序分析器说明书；这本手册包含一组设计场景、约束指南以及相关建议。您应该熟悉 TimeQuest Timing Analyzer 和 Synopsys Design Constraint(SDC) 的基础知识，以便正确地使用这些指南。(Quartus II timequest timing analyzer manual; this manual contains a set of design scenarios, constraint guidelines, and related recommendations. You should be familiar with the basics of timequest timing analyzer and Synopsys design constraint (SDC) to use these guidelines correctly.)

说明：  掌握SDRAM数据读写、刷新、初始化以及FPGA串口收发时序，熟练FIFO IP核的生成和调用。(Master SDRAM data read and write, refresh, initialization and the timing of sending and receiving of the serial port of the FPGA, skilled in the generation and invocation of the FIFO IP core.)

A counter that starts from 0 and increments mod 16 on each rising edge of the clock

Quartus ii 入门基础 仅针对初学者 望各位童鞋们指导 呵呵 (Quartus ii entry basis only for beginners looking to guide their children' s shoes Oh you)

rmii 以太网接口时序源代码，值得开发借鉴的哦(verilog hdl)

an example HDL-Core with any basic gates.

vhdl的很多例子，包括LED、lcd、按键、数码管等等，非常的实用。-VHDL of many examples, including the LED, lcd, keypad, digital control and so on, very practical.

输入正确密码显示绿灯亮 错误时红灯亮并发出警报 运行环境为matplaux 2-a afdg jhg dfgh r fbnrfer

说明：  实现电子密码锁的各项功能,经过编译和仿真(Electronic code lock of the function, the compiler and simulation)