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GPS编程  The idea behind differential GPS is to remove as much errors as possible from the range measurements

The idea behind differential GPS is to remove as much errors as possible from the range measurements by establishing these errors at a reference site. In its most simple setup, a GPS receiver is located at a well surveyed position and its (pseudo) range measurements are compared with the actual calc ...

https://www.eeworm.com/dl/693/365351.html

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SQL Server 用C编写的短小精悍的数据库

用C编写的短小精悍的数据库，既有运行码，又有源代码，支持APPEND,DELETE,SAVE,LOAD,INSERT,SHOW,FIND,SORT,CLOSE,MODIFY,QUIT,HELP等命令，对于想学习如何用C实现数据库sql语句编程的同仁很有帮助。

https://www.eeworm.com/dl/689/365719.html

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磁盘编程  多用户多级目录的文件系统,（1）具有login (用户登录) （2）系统初始化（建文件卷、提供登录模块）（3）文件的创建： create （4）文件的打开：open （5）文件的读：read

多用户多级目录的文件系统,（1）具有login (用户登录) （2）系统初始化（建文件卷、提供登录模块）（3）文件的创建： create （4）文件的打开：open （5）文件的读：read （6）文件的写：write （7）文件关闭：close （8）删除文件：delete （9）创建目录（建立子目录）：mkdir （10）改变当前目录：cd （11）列出文件目 ...

https://www.eeworm.com/dl/629/382021.html

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VC书籍  函数分库函数和用户自定义函数两类：库函数（又称系统函数）是高级语言软家中提供基础功能的函数。库函数文件以h为文件后缀

函数分库函数和用户自定义函数两类：库函数（又称系统函数）是高级语言软家中提供基础功能的函数。库函数文件以h为文件后缀，如C语言的stdio.h文件包括了printf(), scanf (),open(),close()。C语言中主函数要使用某库函数：#include<库函数文件名> ...

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Java编程  这是一个用线程实现的图形动画实例

这是一个用线程实现的图形动画实例，每当鼠标点击一次“Start”按钮，屏幕上将产生一个随机颜色的小圆球，该圆球将在屏幕上发生碰撞跳动，直到点击“Close”按钮为止。该实例由5个类构成，分别放在以下4个文件中：Ball.java、BallCanvas.java、BallThread.java、BounceFrame.java。主类是BounceFrame。 ...

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其他  SENTINEL 的加密狗lic生成工具方法如下 1.copy a870.sentinel to windowssystem32 folder. 2.run Emulator Utility

SENTINEL 的加密狗lic生成工具方法如下 1.copy a870.sentinel to windows\system32 folder. 2.run Emulator Utility and then press install button and close the utility. 3.run wechoid.exe, selector must be 1e or 1c 4.then run LicGen and use selector and code from wechoid.exe w/o 0x, it will make a license ...

https://www.eeworm.com/dl/534/402880.html

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Java编程  Genetic Algorithm example using Java You have 10 cards numbered 1 to 10. You have to divide them i

Genetic Algorithm example using Java You have 10 cards numbered 1 to 10. You have to divide them into 2 piles so that: The sum of the first pile is as close as possible to 36 and the product of all in second pile is as close as poss to 360.

https://www.eeworm.com/dl/633/412835.html

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Delphi控件源码  Permits to negotiate of simple form (without code) some of the most utilized combinations of keys i

Permits to negotiate of simple form (without code) some of the most utilized combinations of keys in the forms. It suffices with freeing the component on the form and to activate the properties desired segun the behavior that want. * ENTER to change of field. * ESC to close the form * to ...

https://www.eeworm.com/dl/666/429013.html

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数学计算  pHash is an implementation of various perceptual hashing algorithms. A perceptual hash is a fingerpr

pHash is an implementation of various perceptual hashing algorithms. A perceptual hash is a fingerprint of an audio, video, or image file that is mathematically based on the audio or visual content contained within. Unlike cryptographic hash functions that rely on the avalanche effect of small chang ...

https://www.eeworm.com/dl/641/429179.html

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Linux/Unix编程  Linux系统中

Linux系统中，设备驱动程序是操作系统内核的重要组成部分，在与硬件设备之间建立了标准的抽象接口。通过这个接口，用户可以像处理普通文件一样，对硬件设备进行打开(open)、关闭(close)、读写(read/write)等操作。通过分析和设计设备驱动程序，可以深入理解Linux系统和进行系统开发。本文通过一个简单的例子来说明设备驱动 ...

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