请问Visual Studio 2012有哪些版本，功能区别是什么？
win7 环境已经安装了2010，再装2012，会不会有冲突？
谢谢。
1）版本不同，参考：http://www.microsoft.com/visualstudio/chs/products/compare
2）一般不需要这样安装，只一个就足矣了。几个一起安装不会冲突。
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