vhdl编写的硬件乘法器

说明：  30 bus for atp design

Floating Point FP multiplication is widely used in large set of scientific and signal processing computation. Multiplication is one of the common arithmetic operations in these computations. A high speed floating point double precision multiplier is implemented on a Virtex 6 FPGA. In addition, the proposed design is compliant with IEEE 754 format and handles over flow, under flow, rounding and various exception conditions. The design achieved the operating frequency of 414.714 MHz with an area of 648 slices.

TLC5620驱动程序包括其他文件,8位，4通道，电压输出型DAC的数模转换器(TLC5620 driver and doc)

一个2位的BCD码十进制加法计数器电路，输入为时钟信号CLK，进位 输入信号CIN，每个BCD码十进制加法计数器的输出信号为D、C、B、A和进位输出信号COUT，输入时钟信号CLK用固定时钟，进位输入信号CIN. (A 2-bit BCD code decimal adder counter circuit input as the clock signal CLK, a carry input signal CIN, D, C, B, A, and the carry output signal COUT, each BCD code decimal adder counter' s output signal, the input clock signal CLK Fixed clock, binary input signal CIN.)

说明：  基于无源蜂鸣器和矩阵按键的电子琴系统设计(design of Electronic Piano System Based on Passive Buzzer and Matrix Key)

课程设计要求设计并用FPGA实现一个数字频率计，具体设计要求如下： 测量频率范围： 10Hz～100KHz 精度： ΔF / F ≤ ±2 % 系统外部时钟： 1024Hz 测量波形： 方波 Vp-p ＝ 3～5 V 硬件设备：Altera Flex10K10 五位数码管 LED发光二极管 编程语言：Verilog HDL / VHDL-curriculum design and FPGA design to achieve a digital frequency meter, the specific design requirements are as follows : measurement frequency range : 10Hz to 100KHz precision : F/F 2% external clock system : 1024Hz Waveform Measurement : square Vp-p = 3 ~ 5 V hardware : Altera Flex10K10 five digital LED light emitting diode programming languages : Verilog HDL/VHDL

用于实现两个数相加的vhdl代码，在相应的编译器中使用-used to achieve the two summed VHDL code, the corresponding use of compiler

16点FFT，简单易理解，适合初学者了解(16 point FFT, simple and easy to understand, suitable for beginners to understand)

一个视频信号输入的verilog源代码，里面含有相关的使用文档。-A video signal input of the Verilog source code, which contains documents related to the use.

AES算法部分模块行位移列变换以及主题程序加密解密(AES algorithm transforms part of the module rows and columns relating to the displacement of encryption and decryption program)