实现对字符的赫夫曼编码，译码，运用栈存储少量字符数据

通过对键盘的编程，实验对键值的读取，实现计算器的功能，并将结果在数码管上显示。-Programming through the keyboard, the key test of reading, realize the functions of the calculator and the results in the digital tube display.

不使用WinRAR，在程序中自由解压缩RAR文档 开发环境：VisualBasic-Do not use WinRAR, in the process of extracting RAR files free development environment: VisualBasic

Arithmetic coding source code. A very good software for arithmetic coding.

VC下的INTERNET的建立-VC establishment of the Internet

decompression using the lifting

该程序是打开文件夹的浏览模式，可供初学者一般的学习的实用软件。-The program is to open a folder browse mode, for beginners to learn the general utility software.

通过循环实现线条的渐变,实现方法是一个像素一个像素地画线-cycle through the gradual realization of lines to achieve a pixel is a pixel Draw Line

① 对输入文法，由程序自动构造FIRST FOLLOW集 ② 对输入文法，由程序自动生成它的LL(1)分析表； ③ 对于给定的输入串，应能判断识别该串是否为给定文法的句型。-① the input grammar, automatically constructed by the procedures set FIRST FOLLOW ② the input grammar, it is automatically generated by the process of LL (1) analysis table ③ For a given input strings, should be able to identify the string to determine whether a given grammar sentence.

通信中的压缩、解压缩。利用相对编码的原理，进行前后相减。（编程背景为温室温度测量，限定在正负50以内）。已经编译通过。-Communication compression, decompression. The principle use of the relative encoding, carried out before and after the subtraction. (Programming background greenhouse temperature measurement, limited to within plus or minus 50). Has been compiled through.

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