18 x 18 华莱士树乘法器

quartus II 13.0 DDS工程文件，采用VHDL编写，可输出正交两路正弦信号。可以直接用modelsim-alter 仿真(quartus II 13.0 DDS project file, using VHDL written two orthogonal sinusoidal output signals. Can be simulated directly modelsim-alter)

不足20元的PCI设计，含ABEL源代码。(PCI design less than 20Yuan ,including ABEL code)

PCI总线仲裁参考设计，Quicklogic提供的verilog代码-PCI bus arbitration reference design, pioneered the Verilog code

设计制作一个检测4*4矩阵键盘的按键编码的实验，把实际按键的键值的八位编码先转换成从0000—1111的编码，再译成数码管能识别的八位编码，在数码管动态显示时，4*4矩阵键盘的第一行对应00—03，第二行对应04—07，第三行08—11，第四行对应12—15。(Design a 4* 4 matrix keyboard key coding experiments to detect the key the actual key octet coded first convert from 0000-1111 encoding, and then translated into digital tube to identify the eight coding, digital tube dynamic display, the first line of the 4* 4 matrix keyboard corresponding to 00-03, the second line corresponds to 04-07, the third line of 08-11, the fourth line corresponds to 12-15.)

说明：  能实现输入0.5 1 5块钱的累加，然后对应购买的商品价格进行比较，显示找的钱数或错误灯(MY English is very good)

matlab code for communication

JPEG标准下图象压缩的vhdl实现工程，文件包括一个图像。-JPEG image compression standard works of VHDL realize that the document includes an image.

基于VHDL+FPGA的DDS信号发生设计，已经通过调式-Based on VHDL+ FPGA design of the DDS signal has been through mode

wm8731音频编解码芯片使用介绍,该手册里面对该芯片进行了详细的描述，对各个单元模块也进行了详细的阐述(the handbook of WM8721/WM8731L)

数字频率测量器，脉宽测量器。可测量多种频率波形的脉宽。(Digital frequency measurement device, pulse width measurement device. Measurement of the waveform of frequency pulse width)