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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！
...-07-15 12:26 编辑
一、概述
该模块是一款以专用集成电路为核心的经济型MODBUS-485继电器模块,实现了标准MODBUS-485通信功能。它可以与9V，12V或24V电压配合使用。本模块支持所有常见波特率、停止位和校验位的组合，并可任意设置M...
【AI2Claw】正式上线！用自然语言“搭建” App Inventor 界面和代码块！ - ...
...理最旧的记录
你还可以这样问：
- 设置屏幕标题为“智能控制小车”
- 隐藏当前屏幕的标题栏
- 背景颜色推荐一个
- 设置按钮背景为橙色
- 添加一个屏幕abc
- 修改屏幕名称为abc
- 美化界面
- 背景改为谈绿色
- 导入bl...
近期 Chrome 下 Discuz 兼容问题修复记录：AJAX 提交失效与移动链接误跳转 ...
...性相关的问题，记录如下。
一、AJAX 操作失效，表现为“加载中”一闪而过，没有后续动作
现象：
1. 登录、帖子分类、部分弹层提交等 AJAX 操作失效
2. 浏览器控制台最初还伴随扩展注入报错，但关闭扩展后问题依旧...
提升大数据分析思想，拥抱大数据未来 - 资讯 - 清泛网 - 专注C/C++及内核技术
...速度和更低的成本来获取和储存大量的数据。有人甚至认为，科技很快就能让大数据分析变得“像使用Excel一样容易”。在其他如潮水般涌起的革命性数据科学当中，最令人感到兴奋的莫过于能够实时掌握消费者和物联网的动态...
How do I make and use a Queue in Objective-C?
...ection and fast enumeration (both present in 10.5+, but only the latter on iPhone) and you don't have to worry about what is an Objective-C object and what is a C++ object.
Lastly, although NSMutableArray is better than a standard C array when adding and removing from either end, it's also not the ...
How can I put a ListView into a ScrollView without it collapsing?
...le response. If I could share some feedback, I have much more significant iPhone experience, and I can tell you that Apple's documentation is far better written with regard to performance characteristics and use cases (or anti-patterns) like this. Overall, the Android documentation is far more dis...
How does one generate a random number in Apple's Swift language?
...t the base functions are limited to 32-bit integer types (Int is 64-bit on iPhone 5S and modern Macs). Here's a generic function for a random number of a type expressible by an integer literal:
public func arc4random<T: ExpressibleByIntegerLiteral>(_ type: T.Type) -> T {
var r: T = 0
...
What does this gdb output mean?
...l)
NSLog(@"audio player not initialized");
else if(TARGET_IPHONE_SIMULATOR)
{
NSLog(@"beep play");
}
else
{
[beep play];
}
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Creating .pem file for APNS?
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Here is what I did, From:blog.boxedice.com and "iPhone Advanced Projects" chapter 10 byJoe Pezzillo.
With the aps_developer_identity.cer in the keychain:
Launch Keychain Access from your local Mac and from the login keychain, filter by the Certificates category. You wil...
How to intercept click on link in UITextView?
... from within a UIWebView here: github.com/nbuggia/Browser-View-Controller--iPhone-.
– Nathan Buggia
Nov 5 '11 at 2:53
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