Dry-eye

GIS相关工具，可以读写压缩的e00文件(GIS tools that can read and write file compression e00)

利用二维数组创建杨辉三角形，基于vc++程序设计(Creating a Yang Hui triangle by using a two-dimensional array .Programming based on vc++)

设X[ 0 : n - 1]和Y[ 0 : n – 1 ]为两个数组，每个数组中含有n个已排好序的数。找出X和Y的2n个数的中位数。  编程任务 利用分治策略试设计一个O (log n)时间的算法求出这2n个数的中位数。 数据输入 由文件input.txt提供输入数据。文件的第1行中有1个正整数n（n<=200），表示每个数组有n个数。接下来的两行分别是X，Y数组的元素。结果输出 程序运行结束时，将计算出的中位数输出到文件output.txt中(Let X [0: n- 1] and Y [0: n- 1] for the two arrays, each array containing the n number has been sorted. 2n X and Y to identify the number of digits.  programming tasks using the divide and conquer strategy try to design an O (log n) time algorithm to calculate this median number 2n. Data input by the input data provided input.txt file. The first line in the file has a positive integer n (n < = 200), that there are n numbers of each array. The next two lines are the X, Y array elements. The end result is output program runs, the calculated median output to file output.txt)

说明：  Circle Through Three Points

说明：  广义最小方差控制，较为完整，通过仿真亲测实用性较高，不需要实际数据，仅仅需要模型。(The generalized minimum variance control is more complete. It is more practical to test by simulation. It does not need the actual data, only needs the model.)

to check the user has the administration rights is more complicated in windows 7, this is the sample to check it.

说明：  在dos下声音的处理pc喇叭发声,声卡技术,WAV文件的播放技术(voice processing pc speakers audible, audio technology, WAV file playback technology)

编写一个控制台程序，模拟在ATM机的存款和取款过程，当输入给定的卡号和密码（初始卡号和密码到数据文件里查看）时，系统能登录ATM系统，根据用户的身份不同显示不同的程序界面；取款 　　每次取款金额只能为100的倍数，总额不超过2000元，不允许透支。且取款之后，要记录取款的金额和时间。 存款 　　每次存款金额只能为100的倍数，总额不超过2000元。 修改密码 　　新密码长度不小于6位，不允许出现6位完全相同的情况，只有旧密码正确，新密码符合要求，且两次输入相同的情况下才可以成功修改密码。(Write a console program to simulate the ATM deposits and withdrawals process, when you enter a given number and password (the initial number and password to the data file view), the system can log in ATM systems, according to the user' s identity different display different The program interface withdrawal amount each withdrawal can only be a multiple of 100, the total does not exceed 2,000 yuan, does not allow overdrafts. And withdrawals after the withdrawal of the amount to be recorded and time. Deposit Amount per Deposit only a multiple of 100, totaling no more than 2,000 yuan. Change Password New Password length not less than six, allowed six identical situation, only the old password is correct, the new password meets the requirements, and enter the same case twice before they can successfully change the password.)

磁盘文件系统的模拟,能实现文件的添加,删除,实现多级目录(Disk file system simulation, can realize the file to add, delete, multi-stage directory)

用冲激响应不变法和双线性变换法设计IIR的MATLAB程序(Design of MATLAB Program for IIR by Impulse response Invariant method and Bilinear Transformation method)