并行通信代码（调试通过）

说明：  这是32位移位寄存器，是用verilog编写的，能够实现从1到31位的左或右的移位(This is a 32-bit shift register, is prepared verilog, can be realized from the 1-31 shift left or right)

本文介绍了一个使用 VHDL 描述计数器的设计、综合、仿真的全过程，作为我这一段 时间自学 FPGA/CPLD 的总结，如果有什么不正确的地方，敬请各位不幸看到这篇文章的 大侠们指正，在此表示感谢。当然，这是一个非常简单的时序逻辑电路实例，主要是详细 描述了一些软件的使用方法。文章中涉及的软件有Synplicity 公司出品的Synplify Pro 7.7.1； Altera 公司出品的 Quartus II 4.2；Mentor Graphics 公司出品的 ModelSim SE 6.0。 -This article describes a VHDL description of the use of counter design, synthesis, simulation of the entire process, this time as my self-FPGA/CPLD summary, if what has not the right place, please see this article that, unfortunately, the heroes They correct me, wish to express my gratitude. Of course, this is a very simple example of sequential logic circuit is mainly a detailed description of a number of software usage. Article involved in the software company has produced Synplicity

乐曲演奏电路，能演奏歌曲，同时在数码管上显示演奏的乐曲音符的数字。-Music concert circuit, can play songs at the same time in the digital tube displays the number of notes played music.

基于Matlab的FPGA数字半带滤波器设计(Matlab-based FPGA digital half-band filter design)

三种方法编写多路选择器的VHDL源代码 分别使用if else ,select ,when 语句-three methods to prepare multiple choice of VHDL source code were used if else, select, when words

example of BCH and RS codecs

VHDL is defined by IEEE Standard 1076, IEEE Standard VHDL Language Reference Manual (the VHDL LRM). The original standard was approved in 1987. IEEE procedures require that standards be periodically reviewed and either reaffirmed or revised. The VHDL standard was revised in 1993, 2000, and 2002. In each revision, new language features were added and some existing features enhanced. The aim in each revision was to improve the language as a tool for design and verification of digital systems. Since the 2002 revision, there have two parallel efforts to further develop the language. The first was the VHDL Procedural Interface (VHPI) Task Force, a subcommittee of the IEEE P1076 Working Group. The VHPI Task Force prepared an interim amendment to the standard, formally approved by IEEE in March 2007. The amendment is titled IEEE 1076c, Standard VHDL Language Reference Manual―Amendment 1: Procedural Language Application Interface.

Nexys-4-DDR-XADC 开发板demo(Nexys-4-DDR-XADC e.v. Board demo)

8051核的vhdl原代码。-8051 core VHDL source code.

考研复试口语，适合计算机专业考研复试口语专业课(Traditional Interview spoken, spoken for Specialized Computer Traditional Interview)