进销存管理系统（Excel VBA实现）

说明： 1、先在“产生式”框中输入产生式，在“输入的符号串”框中输入待分析的符号串，点击“编译”按钮开始根据产生式分析输入的符号串。 2、在“范例”菜单中可以选择预选的产生式和输入符号串范例，有两个范例，其中书上范例为“范例代码2”。 3、“产生式”框中，“显示消除左递归结果”选中时，执行编译后如果“产生式”框内内容没有变化，则原输入的产生式符合LL(1)，否则，“产生式”框内内容将转换为符合LL(1)的文法。-: 1, the first "production" box importation of production, "input string of symbols" input box to the symbol series analysis, Click on the "Build" button to begin production analysis of the input string of symbols. 2, the "paradigm" menu can choose a pre-production series and the importation of symbols example, there are two examples, which book example of "two examples of code." 3, "have a" box, "showed that the elimination of left recursive results" selected, If, after the implementation of compiler "production" box contents have not changed, then the importation of the production line with LL (1), otherwise, "Production" box contents will be converted to meet LL (1) grammar.

Turbo码matlab程序，对学习、课程设计以及毕业设计有比较大的帮助(Turbo code matlab program, to study, curriculum design and graduation design is of great help.)

这是一个用multisim编写的时钟，主要由芯片级联而成-This is a clock with Multisim prepared mainly by the chip cascade from

说明：  YS-XFS5152芯片资料，包含规格书，PCB，原理图，程序等(YS - XFS5152 chip information, including specifications, PCB and schematic diagram, program, etc)

说明：  此为回溯法求解迷宫问题的源代码，问题描述如下： 迷宫问题的求解是实验心理学的一个经典问题.，心理学家把一只老鼠从一个无顶盖的大盒子的入口赶进迷宫，迷宫中设置很多壁障，对前进方向形成了多处障碍，心理学家在迷宫的唯一出口放置了奶酪，吸引老鼠在迷宫中寻找通路以到达出口。设计回溯算法实现迷宫求解。(Retrospective method)

取得屏幕的分辨率-made screen resolution

中国卫生信息数据元值域代码,卫生信息数据元值域代码.(Range of health information data element code range of health information data element code)

比较完善的CRC编码VerilogHDL描述-more perfect description of CRC coding VerilogHDL

新型算法之蜻蜓优化算法，通过观察自然界中蜻蜓的动静态得之。(The new algorithm for dragonfly optimization is obtained by observing the movement and static state of dragonflies in nature.)

说明：  包含叠前逆时偏移程序和几篇逆时偏移论文；地震子波的正演与反演(Includes the prestack inverse time migration program and several inverse time migration papers; Forward modeling and inversion of seismic wavelet)