4 x 4 不能静下来将乘数的源代码保存

verilog编写的QPSK发射机的ＦＰＧＡ部分，已经过验证，完全达到要求。调制矢量误差４％(QPSK transmitter verilog prepared by the FPGA portion, has been proven, fully meet the requirements. Modulation vector error of 4 )

Rst是低电平有效的系统复位信号，Clk是时钟信号。AB[5：0]是地址信号，DB[7：0]是数据信号，wr是低电平有效的写信号。start是启动信号。 模块中有一个64x8的双端口的存储器。系统复位结束后，可以通过AB、DB和wr信号向同步存储器写入数据。当写入64个数据后，给出一个Clk周期宽度的脉冲信号start，则系统从存储器0地址处开始读出数据，读出的8位数据从低位开始以3位为一组，每个时钟周期输出一组，即第一个时钟周期输出[2：0]位，第二个时钟周期输出[5：3]位，第三个周期输出1地址的[0]位和0地址的[7：6]位，直至将存储器中64x8数据全部输出。若最后一组不足三位，则高位补0。 (Rst is an active-low system reset signal, Clk is a clock signal. AB [5: 0] is the address signal, DB [7: 0] is the data signal, wr write signal is active low. start is the start signal. Module in a dual port memory of 64x8. After the reset, you can write data to the synchronous memory by AB, DB and wr signals. When data is written to 64, given the width of a pulse signal Clk cycle start, the system begins to read the memory address 0, 8 data read out a low starting with three as a group, each clock outputs a set period, which is the first clock cycle of the output [2: 0] bits, the second clock cycle output [5: 3] position, the third cycle of the output of an address [0] and 0 address [7 : 6] bit, until all the data in memory 64x8 output. If the last group of less than three, the high 0s.)

这是一个简单的方式来创建一个 verilog 模块为 7 段的目的，是很容易阅读和它可以测试您的 nexys 4 对 FPGA。

用verilog状态机实现的自动售货机，是一次课程作业，参考了网上的例子进行了修改(Automatic vending machine implemented with Verilog state machine)

《精彩51单片机教程》适合初学者，很难得(" Discover the 51 SCM Guide" for beginners, very rare)

KDP晶体二倍频与三倍频；基于耦合波方程组；已于实验结果校核 (Sum Frequency in KDP)

基于VHDL的FPGA开发快速入门·技巧·实例 ,电子工程师创新设计必备宝典系列之FPGA开发全攻，未来，FPGA 开 发能力对工程师而言将成为类似C 语言的基础能力之一，面对这样的发展趋势，你还能简单地将FPGA 当成一种逻辑器件吗？还能对FPGA 的发展无动于衷吗？(基于VHDL的FPGA开发快速入门·技巧·实例 )

基于FPGA的Mcbsp通信源码，经过项目实测检验(Mcbsp communication source code based on FPGA,Through the test of the project.)

说明：  This is code of UVM CALLBACK function.

这是OFDM调制matlab的程序，中间详细描述了调制的过程，希望对大家有用。(This is the OFDM modulation matlab procedures, a detailed description of the intermediate modulation process, I hope useful.)