用vhdl实现24小时计数器，方法简单实用。 仿真环境MAXPLUS

Take its complement by applying DeMorgan’s theorem to obtain F in the form of product of complemented products.

格子玻尔兹曼方法模拟poiseuille流，半反弹边界，适合进阶学者(Lattice Boltzmann Simulation poiseuille stream, half rebound border for advanced scholars)

relative cpu design implementation

说明：  实现基于黑金开发板的实时时钟功能，显示时分秒(Realize the real-time clock function based on black gold development board, display time, minute and second)

说明：  试用Verilog HDL语言，设计十进制计数器，将计数过程用一个数码管进行显示（0～9）。要求首先使用Modelsim软件进行功能仿真，然后使用Quartus软件综合，并下载到开发板进行电路功能测试。(Using Verilog HDL language, a decimal counter is designed. The counting process is displayed by a digital tube (0 ~ 9). It is required to first use Modelsim software for functional simulation, then use quartus software for synthesis, and download to the development board for circuit functional test.)

  基于FPGA(Field-Programmable Gate Array)的OFDM(Orthogonal Frequency Division Multiplexing)信号传输系统VHDL源码 use IEEE.std_logic_unsigned.all; package outconverter is constant stage : natural := 3; constant FFTDELAY:integer:=13+2*STAGE; constant FACTORDELAY:integer:=6; constant OUTDELAY:integer:=9; function counter2addr( counter : std_logic_vector; mask1:std_logic_vector; mask2:std_logic_vector ) return std_logic_vector; function outcounter2addr(counter : std_logic_vector) return std_logic_vector; end outconverter; package body outconverter is function counter2addr( counter : std_logic_vector; mask1:std_logic_vector; mask2:std_logic_vector ) return std_logic_vector is variable result :std_logic_vector(counter"range); begin for n in mask1"range loop if mask1(n)="1" then result( 2*n+1 downto 2*n ):=counter( 1 downto 0 ); elsif mask2(n)="1" and n/=STAGE-1

说明：  verilog语言写的SPI接口,全同步设计,低门数,可以很容易应用到嵌入设计方案中.(Verilog language to write the SPI interface, all synchronous design, low gate count. it is very easy to use embedded design programs.)

spartanII 是xilinx公司提供的一款高性能FGPA芯片,本文详细介绍spartanII的体系结构和编程!-spartanII Xilinx is provided by a high-performance chip FGPA, spartanII This paper describes the architecture and programming!

分频器的VHDL程序，完整的建立工程，编译，功能功能仿真，验证-fenpinqi de vhdlchengxu gongnengfnagzhen,yanzheng

完成RS（5，3）编码程序，运用Verilog语言。(Complete the RS (5,3) coding process, the use of Verilog language.)