dct1d核心的FPGA实现

these are the source codes for the book " 100 power tips for FPGA designers"

为了便于计算结果在FPGA中后续的计算和ip核中的调用，本代码输入信号为普通浮点型数据，输出为32位表示的浮点型数据。

本程序实现数字钟系统，有整点报时功能，可显示切换年月日，定时功能(Digital clock system of this program, with the whole point timekeeping function, can display the date, the timing function)

CSS配合jquery制作完美漂亮的时钟，貌似在IE8下时钟不能获取时间啊！支持ie9、chrome、safari、firefox、opera （Chrome显示效果最佳，IE9下时钟无法工作）日历和骰子是原创，CSS3时钟并非原创但经过改良支持opera。数字日历的兼容性不错，圆形时钟就差点了，也希望一起交流，共同改进。(CSS with the jquery make perfect beautiful clock, seemingly in IE8 under the clock can not get the time ah! Support ie9, chrome, safari, firefox, opera (Chrome show the best results, the clock does not work under IE9) calendar and dice is original, CSS3 clock is not original but after improved support opera. Digital calendar compatibility is good, almost round the clock on, and also hope together, and work together to improve.)

SMBus控制器的VHDL源码程序，适用于Quartus2，ISE等开发环境。(The SMBus controller VHDL source code procedures applicable to Quartus2 ISE development environment.)

基于FPGA的利用rom进行查询的方式生成一个频率为10KHZ的sin信号，编译成功，并实现功能仿真。(Query based on the the FPGA use of rom generate a frequency of 10 kHz sin signal, compiled successfully and to achieve functional simulation.)

说明：  利用FPGA实现对外设按键的控制，例如用户库用按键控制跑马灯的效果(FPGA is used to realize the control of external keys, such as the effect of user database using keys to control the running horse lamp)

应用布莱克曼窗实现FIR滤波器，并绘制相应波形图案(Application Blackman window FIR filter, and draw the corresponding waveform pattern)

FPGA测序和DDS产生各种波形程序，用Atral器件开发(FPGA sequencing and DDS generate various waveform programs.)

使用VHDL在CPLD上设计UART的一个项目-VHDL design UART