数字钟的实现 FPGA上运行 VHDL编写

This is an UART real time clock

xilinx accel dsp实例项目工程-xilinx accel dsp project

关于数字电压表的vhdl实现，有仿真程序，可以下载到板子中。(Vhdl digital voltage meter on the implementation of a simulation program can be downloaded to the board.)

通过本文章的学习能够使我们设计一些简单的逻辑电路和系统。很快我们就能过渡到设计相当复杂的数字逻辑系统。-To learn through this article, will enable us to design some simple logic circuits and systems. Soon we will be able to transition to the design of complex digital logic systems.

altera官方的各种有用的参考资料，都是自己收集的，遇到问题可以很方便的查看(altera official variety of useful references, are their own collection, problems can easily view)

说明：  基于PCF8591数模转换和DDS技术的信号发生器系统设计(Design of Signal Generator System Based on PCF8591 Digital-to-Analog Conversion and DDS Technology)

电子设计自动化中的计数器的实现程序，基于VHDL语言完成的-Electronic design automation in the realization of counter procedures, based on the VHDL language completed

在硬件上实现,可以实现一般电子表的功能。比如说计时，显示日期，秒表等功能。还可以显示星期数，可以正常的区分闰年等。并且仿真文件也在其中，反正了其时序变化情况。比较详细。必要出有注释。

该模块实现一个寄存器堆的操作，其中前16个仅主机能写，规给为32-bit×32。后16个仅Micorblaze能写。读取没有限制。如果双方同时对同一地址进行读写操作，读回的数将是全1。(This module implement a register file of the operation, of which the first host 16 is only able to write rules to the 32-bit × 32. Micorblaze only 16 after the write. There is no limit to read. If the two sides at the same time to read and write operations to the same address, read back would have been a full one.)

用于uart 的通信的vhdl代码，可以直接使用