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vc ADO控制Access数据库的程序源码，很不错的demo(vc ADO Access database program source code control, very good demo)

这是一个可以验证素数的小程序。输入一个整数，会帮你判断这个数是否为素数。

说明：  使用C语言编程，史上最让人尖叫的C语言代码(Using the C programming language, most people screaming in the history of C language code)

从键盘接收字符串，并统计其中各种字符出现频率！(calculate the frequency of every sinal get from the keyboard!)

使用了成品遥控车的遥控与接受模块，基于STC89C52RC,模拟PWM输出控制车速，五个前进挡，两个倒挡(The remote control and acceptance module of the finished remote control vehicle is used. Based on STC89C52RC, the output of PWM is simulated to control the speed of the vehicle. There are five forward gears and two reverse gears.)

说明：  ay emulator5 code in c language

CH376DS1说明文档、USB开发、枚举等(CH376DS1 documentation, USB development, enumerations, etc.)

建立试题库文件，随机产生n个题目； 题目涉及加减乘除，带括弧的混合运算； 利用栈求解表达式的值； 随时可以退出； 保留历史分数，能回顾历史，给出与历史分数比较后的评价( The establishment of test database file, the subject of n randomly generated topics related to addition, subtraction, mixed operations with parentheses use the value of the expression stack solution ready to quit to preserve the historical scores, can look back at history, and history gives the comparison of scores Evaluation 保留历史分数，能回顾历史，给出与历史分数比较后的评价)

atmel单片机80c52，DS1302日历芯片，1602液晶电子钟源程序(atmel microcontroller 80c52, DS1302 calendar chip, LCD electronic clock source 1602)

在MATLAB下自编实现快速傅里叶分析，(Fast fft own procedures, faster than the system call fft slowe)