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第三章 #3

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第三章 #3

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4 changes: 3 additions & 1 deletion di-san-zhang-blockly-shun-xu-cheng-xu-she-ji.md
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# 第三章Blockly顺序程序设计
## 3.1 什么是Blockly语言
&emsp;2012年6月，Google发布了完全可视化的编程语言Google Blockly，整个界面清晰明了， 你可以如同在玩拼图一样用一块块图形对象构建出应用程序。每个图形对象都是代码块，你可以将它们拼接起来，创造出简单功能，然后将一个个简单功能组合起来，构建出一个程序。这个程序与我们平时使用的编程语言最大的差别是无需自己编写代码，在我们所使用的代码块的背后就是已经编写好了的代码，而用户并不需要关心这些，整个过程只需要鼠标的拖曳，不需要键盘敲击。<br>
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## 知识梳理
<center><img src="/assets/p57.png"/></center>