完成十余卷积过程，简单方便，能够这样那样这样，sorry

A Full adder using half adder unit in vhdl

The use of FPGAs for cryptographic applications is highly attractive for a variety of reasons but at the same time there are many open issues related to the general security of FPGAs. This contribution attempts to provide a state-of-the-art description of this topic. First, the advantages of reconfigurable hardware for cryptographic applications are discussed from a systems perspective. Second, potential security problems of FPGAs are described in detail, followed by a proposal of a some countermeasure. Third, a list of open research problems is provided. Even though there have been many contributions dealing with the algorithmic aspects of cryptographic schemes implemented on FPGAs, this contribution appears to be the first comprehensive treatment of system and security aspects.

使用VHDL语言，对Altera公司的DE2开发板进行开发，本例实现了对板上7段数码管的显示，在niosiiIDE上基于硬件实现小灯的循环亮灭-Using VHDL language, on Altera s DE2 development board for development, which in this case the realization of paragraph 7 of the on-board digital tube display, in niosiiIDE hardware implementation based on a small circle of bright lights out

嵌入式的LCD的图片显示程序，是LCD最好的资料。(Embedded LCD picture display program is the best LCD data.)

many matlab code with Fftseq ,uniform to gauss AM DSB FM modulation

vhdl 中各种数据类型的转换实现,可以调用函数库实现-date type change

DDR SDRAM控制器的VHDL代码已经测试-DDR SDRAM controller VHDL code

VHDL 快速参考手册，简要概括了VHDL，非常适合做开发参考-VHDL Quick Reference Guide, a brief summary of VHDL, is well suited to do the development of reference

说明：  鉴于stm32在keil平台上的ADC采集转化，在LCD屏上显示程序(voltage acquisition adc)

卷积码（2,1,4）编解码的FPGA实现(Convolution code (2,1,4) decoding the FPGA implementation)