4X4keypad shake the module, the keys for false detection

用于FPGA的huffman算法的HDL编码，包括VHDL及Verilog代码。可用于JPEG及MPEG压缩算法。(The huffman algorithm for FPGA HDL coding, including VHDL and Verilog code. Can be used in JPEG and MPEG compression algorithms.)

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.)

基于FPGA的spi flash 控制器设计，详细的vhdl代码分析.......................................................................................................................................................................................................................

these files are written in verilog but i am uploading in text format

通过配置DS1302芯片来实现实时时钟的监测，我们通过通过控制2个按键来选择我们要在数码管上显示的时间，按下按键1我们来显示周几，按下按键2来显示年月日，不按显示时分秒，这样显示复合我们的数字表的显示(By configuring DS1302 chip to monitor the real-time clock, we select the time that we want to display on the digital tube by controlling 2 keys. Press key 1 to show the week, press the key 2 to show the year and month, not according to the display time, so that the display of the display of the display of our digital table.)

说明：  实现数字频率合成实验，加载数据ram,形成波形(The experiment of digital frequency synthesis is realized, and the data RAM is loaded to form the waveform)

基于FPGA实现的一种新型数字锁相环-FPGA-based realization of a new type of digital phase-locked loop

16位并行相关器的VHDL程序-16 parallel with the VHDL-related procedures

用Verilog实现的 哈佛结构的简单指令集CPU程序，由ALU、地址译码器、指令译码器等部分组成(Part of a simple instruction Verilog realize the Harvard architecture CPU program set by the ALU, address decoder, an instruction decoder, etc.)

数字时钟管理器，xilinx公司开发板集成时钟，实现分频、倍频等功能。(Digital clock managers, xilinx development board integrated clock divider, multiplier, and other functions.)