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Modbus硬件控制01——什么是Modbus - 创客硬件开发 - 清泛IT社区,为创新赋能!
...RTU协议设备必须要有RTU协议!这是Modbus协议上规定的,且默认模式必须是RTU,ASCII作为选项。(也就是说,一般的设备只有RTU这个协议,ASCII一般很少)所以说,一般学习Modbus协议,只需要了解RTU的协议,ASCII作为学习的了解就足...
KIO4_Gradient 拓展:布局中的颜色渐变 - App Inventor 2 中文网 - 清泛IT...
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原版:合成颜色貌似有bug,alpha好像默认是0,设置了100,也是半透明的,设置255彻底成白色了。
暂时用拓展解决一下:https://community.appinventor.mi ... with-colors/56116/2
标签内容过多,如何做到可上下滑动? - App应用开发 - 清泛IT社区,为创新赋能!
...在大模型App中,使用标签进行输出,这时可能内容较多,默认情况下,并不会出现滚动条,不能上下滑动,看不到上面已经隐藏的内容,那么该如何让其可滚动呢?
其实很简单:
垂直滚动布局就是为了解决区域显示不下...
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!
...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,通信使用MODB...
How do I change screen orientation in the Android emulator?
How do we change emulator screen orientation to landscape or portrait?
26 Answers
26
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Mysql ibdata 丢失或损坏如何通过frm&ibd 恢复数据 - 更多技术 - 清泛网 - ...
...可以。
二、大家的mysql数据库必须是按表存放数据的,默认不是,但是大家生产肯定是按分表设置的吧,如果不是,不好意思,这个方法不能恢复你的数据。my.ini的设置为 innodb_file_per_table = 1。
参考 http://blog.chinaunix.net/uid-241119...
iOS 8 removed “minimal-ui” viewport property, are there other “soft fullscreen” solutions?
... there is no way of calculating the dimensions of the minimal-ui using the screen variable, and thus no way of telling when user is in the minimal-ui in advance.
These observations is a result of research as part of developing Brim – view manager for iOS 8. The end implementation works in the fo...
Android Fragment lifecycle over orientation changes
...e: "when the activity is destroyed, so are all fragments"? Since "When the screen orientation changes, the system destroys and recreates the activity [...]".
– cYrus
Mar 29 '15 at 19:33
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One Activity and all other Fragments [closed]
I am thinking of implementing one screen with Activity and all other sreens with Fragments and managing all the fragments thru the activity .
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Disable hover effects on mobile browsers
... When it's being visited from a desktop, I want the clickable areas of the screen to light up with :hover effects (different background color, etc.) With a tablet, there's no mouse, so I don't want any hover effects.
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