We present elliptic curve cryptography (ECC) coprocessor, which is dual-field processor with projective coordinator. We have implemented architecture for scalar multiplication, which is key operation in elliptic curve cryptography. Our coprocessor can be adapted both prime field and binary field, also contains a control unit with 256 bit serial and parallel operations , which provide integrated highthroughput with low power consumptions. Our scalar multiplier architecture operation is perform base on clock rate and produce better performance in term of time and area compared to similar works. We used Verilog for programming and synthesized using Xilinx Vertex II Pro devices. Simulation was done with Modelsim XE 6.1e, VLSI simulation software from Mentor Graphics Corporation especially for Xilinx devices.

这篇是利用VHDL语言控制LCD1602芯片来显示时钟的简单代码。LCD1602顾名思义是一种02*16，即为两行十六列的液晶显示屏，液晶两行，每行可以显示16个字符，但是CGRAM及CGROM里面一共有160个字符，包括阿拉伯数字，英文字母大小写，常用符号及日文。每个字符对应于一个ASCII码值，在液晶显示屏上显示对应的字符时候，只需要将对应的ASCII码写到DDRAM中就好。

介绍了在数字语音通信中, 利用在系统可编程技术和复杂可编程逻辑器件CPLD, 实现了数字语音的复接和分接 对于其中的单稳态电路的数字化和数字锁相环提取位同步信号也进行了详细的设计说明。实际应用结果表明, 系统工作稳 定可靠, 设计是成功的。(Describes the digital voice communications, the use of in-system programmable technical and complex programmable logic device CPLD, to achieve the digital voice multiplexer and demultiplexer for the single steady state in which the digital circuit and digital phase locked loop extraction bit synchronization signals are also carried out a detailed design specification. The practical application results show that the system works stable and reliable design is successful.)

完成的是RS422信号的计数功能，并产生一定的触发信号-RS422 signals the completion of the count function, and produce a certain trigger signals

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基于Xilinx fpga的ddr2 控制器设计方法-Xilinx fpga-based controller design method of ddr2

本文介绍了汉明编码与译码通过FPGA器件来实现，介绍了使用VHDL语言编程的基本算法！-This article describes the Hamming encoding and decoding through the FPGA device to implement, introduced the use of VHDL programming language is the basic algorithm!

这是一个讲究的的 介绍VB在犀牛软件里的 很好的东西 你会满意的 相信我(you will be glad)

this document used for how to get config and location information of PCI card

IRIG_B解码器，直接解码IRIG_B DC(IRIG_B decoder)