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Modbus硬件控制02——modbus继电器 - 创客硬件开发 - 清泛IT社区,为创新赋能!

...置均通过485通信口进行设置,且可通过产品上的按键进行重置为默认设置,即为9600波特率,8个数据位,偶校验,1个停止位。 二、模块功能 本模块具备一路数字输入和一路数字输出,还具备一个标准的 RS-485 通讯接口,通信...
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What is the difference/usage of homebrew, macports or other package installation tools? [closed]

... gcc42 llvm-gcc42 mp-gcc48 none llvm none mp-llvm-3.3 none mysql mysql56 mysql56 none php php55 php55 php56 none postgresql postgresql94 postgresql93 postgresql94 none python none python24 python25-apple python26-apple python27 python27-app...
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如何在Visual Studio中运行和调试汇编代码 - 更多技术 - 清泛网 - 专注C/C++及内核技术

如何在Visual Studio中运行和调试汇编代码使用内联汇编__asm,如下:int _tmain(int argc, _TCHAR* argv[]){ int a = 1; __asm{ ...使用内联汇编__asm,如下: int _tmain(int argc, _TCHAR* argv[]) { int a = 1; __asm{ x...
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PHP server on local machine?

...ed for a PHP Server and this simply is a PHP Server. If you want to run a MYSQL Server or PostGres Server then that would be another question and you can configure your PHP Application to use said server. Also for quick development purposes a SQLITE DB should do. – GardenRout...
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如何实现phpcms和discuz的Cookie同步 - 更多技术 - 清泛网 - 专注C/C++及内核技术

如何实现phpcms和discuz的Cookie同步===本文导读===UCenter实现各系统通信的原理如何实现phpcms和discuz的Cookie同步===全文阅读===整合phpcms v9和discuz X3 2实现同步登陆 ===本文导读=== UCenter实现各系统通信的原理 整合phpcms v9和discuz X3.2实...
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如何获取IE (控件)的所有链接(包括Frameset, iframe) - C/C++ - 清泛网 -...

如何获取IE (控件)的所有链接(包括Frameset, iframe)IE 顶层 body 节点通过IHTMLElement->get_all 方法无法获取iframe 里面的节点列表:CComPtr<IHTMLElement> body;...CComPtr<IDispatc...IE 顶层 body 节点通过IHTMLElement->get_all 方法无法获取iframe 里面的节...
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Bundler: Command not found

I am hosting on a vps, ubuntu 10.04, rails 3, ruby and mysql installed correctly by following some tutorials. If I run bundle check or bundle install I get the error '-bash: bundle: command not found'. From gem list --local I see 'bundler (1.0.2, 1.0.0)' is installed. ...
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c/c++如何获取CPU的序列号? - C/C++ - 清泛网 - 专注C/C++及内核技术

c/c++如何获取CPU的序列号?获取CPU序列表的完整实例代码如下:#include "stdafx.h"#include <afx.h>CString GetCpuSerial(){unsigned long st1 = 0;un...获取CPU序列表的完整实例代码如下: #include "stdafx.h" #include <afx.h> CString GetCpuSerial() { unsigne...
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Are table names in MySQL case sensitive?

Are table names in MySQL case sensitive? 5 Answers 5 ...
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如何查看Oracle用户的SQL执行历史记录? - 数据库(内核) - 清泛网 - 专注C/...

如何查看Oracle用户的SQL执行历史记录?select * from v$sqlarea t order by t LAST_ACTIVE_TIME desc注意 :执行此语句等等一些相关的语句 必须具有DBA 的权限 虽然 select * from v$sqlarea t order by t.LAST_ACTIVE_TIME desc 注意 :执行此语句等等一些相...