it is a multiplier used in RIsc architecture based processor.......

vhdl编程语言电子书，英文的，有很多例子(VHDL programming language e-books, in English, there are many examples of)

stc12c5a60s2单片机做的两路呼吸灯，可以用ad和按键控制闪动频率(stc12c5a60s2 SCM done with the two breathing lights, you can use the ad and buttons to control the flashing frequency)

基于Xilinx Vertex2的可综合的2048x10位的读写可控制FIFO模块源代码，深度可控(Based on the Xilinx Vertex2 can be integrated 2048x10-bit read and write can control the FIFO module source code, the depth of controllable)

学习FPGA的资料，基于FPGA的卡尔曼滤波器的设计与实现(Learning FPGA information, FPGA-based Design and Implementation of Kalman Filter)

关于FPGA排序算法的研究文献，有全排序和一些归并算法的文献介绍。(FPGA sequencing algorithm on the literature, there are some sort of sorting algorithm and the literature on the merger.)

使用Xilinx3S400开发的钢板检测算法中心化算法，通过测试。-a vhdl-program use Xilinx3S400

该代码实现了对SD 卡的读写操作，是一个较好的范例。(The code achieves access reading SD CARD based on DE-2，It is a good example。)

说明：  利用stm32F407实现的等精度测频，可以精确测量频率，误差很小(The equal precision frequency measurement realized by stm32F407 can accurately measure frequency with little error.)

Verilog HDL的PLI子程序接口，用于与用户C程序在2个方向上传输数据，可用xilinx ISE，quartusii或modelsim仿真，-Verilog HDL PLI subroutine interfaces, for C program with the user in the direction of two transmission of data, available xilinx ISE. quartusii or modelsim simulation,

低电源电压范围为1.8 V至3.6 V 超低功耗： - 主动模式：280μA，在1 MHz，2.2伏 - 待机模式：1.1μA - 关闭模式（RAM保持）：0.1μA 五省电模式 欠待机模式唤醒 超过6微秒 16位RISC架构， 125 ns指令周期时间 12位A/ D转换器具有内部 参考，采样和保持，并 AutoScan功能 16位Timer_B随着三† 或七‡ 捕捉/比较随着阴影寄存器 具有三个16位定时器A 捕捉/比较寄存器 片上比较器 串行通信接口（USART）， 选择异步UART或 同步SPI软件： - 两个USART（USART0 USART1）的† - 一个USART（USART0）‡ 掉电检测 电源电压监控器/监视器 可编程电平检测 串行板载编程， 无需外部编程电压 安全可编程代码保护 融合(Low Supply-Voltage Range, 1.8 V to 3.6 V Ultralow-Power Consumption: − Active Mode: 280 µ A at 1 MHz, 2.2 V − Standby Mode: 1.1 µ A − Off Mode (RAM Retention): 0.1 µ A Five Power Saving Modes Wake-Up From Standby Mode in Less Than 6 µ s 16-Bit RISC Architecture, 125-ns Instruction Cycle Time 12-Bit A/D Converter With Internal Reference, Sample-and-Hold and Autoscan Feature 16-Bit Timer_B With Three† or Seven‡ Capture/Compare-With-Shadow Registers 16-Bit Timer_A With Three Capture/Compare Registers On-Chip Comparator Serial Communication Interface (USART), Select Asynchronous UART or Synchronous SPI by Software: − Two USARTs (USART0, USART1)† − One USART (USART0)‡ Brownout Detector Supply Voltage Supervisor/Monitor With Programmable Level Detection Serial Onboard Programming, No External Programming Voltage Needed Programmable Code Protection by Security Fuse)