一个老外写的用CPLD实现DDS的软件，大家参考参考！

开发嵌入式linux系统 系统平台是华恒HHARM2410 可以作为初学者学习开发嵌入式系统的学习手册-embedded Linux platform is huaheng HHARM2410 as beginners can learn to develop embedded systems learning manuals

AD7705的读写驱动，应用者更改读写端口即可直接应用-the AD7705 s driver that can easily be applied through changing the IO deininition.

本程序详细介绍了LCD1602的使用方法及初始化.-This procedure described in detail the use of methods and LCD1602 initialization.

sharp flash blob 的烧写代码-sharp flash of burning blob of code

采用9054做为板卡与计算机通信的媒介，ADSP21161作为运算器件的采集卡。该程序完成计算机通信。-Using 9054 as the board of the media and computer communications, ADSP21161 computing device as a capture card. Computer Communications completed the program.

8位采样正弦波形发生器--8 bit Sin wave generator.

各种IIR及FIR数字滤波器的FPGA算法实验指导，适合新手学习。-A variety of IIR and FIR digital filter FPGA-algorithm experimental guide, suitable for novice to learn.

开 关 电 源 手 册-manual switching power supply

ADC采用七段

0――999计数器。在STC89C52单片机下开发的程序，可实现自动0――999计数。-0- 999 counters. At STC89C52 procedures developed under the single-chip microcomputer can automatically achieve 0- 999 counts.