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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！
...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MODBUS-RTU 协议。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 MODBUS地址。本模块必须与上位机共地。
三、...
What is the direction of stack growth in most modern systems?
...rocessor it's running on. Solaris, for example, runs on x86 and SPARC. Mac OSX (as you mentioned) runs on PPC and x86. Linux runs on everything from my big honkin' System z at work to a puny little wristwatch.
If the CPU provides any kind of choice, the ABI / calling convention used by the OS speci...
Convert SVG image to PNG with PHP
...etImageFormat("png24");
$im->resizeImage(720, 445, imagick::FILTER_LANCZOS, 1); /*Optional, if you need to resize*/
/*jpeg*/
$im->setImageFormat("jpeg");
$im->adaptiveResizeImage(720, 445); /*Optional, if you need to resize*/
$im->writeImage('/path/to/colored/us-map.png');/*(or .jpg)*...
html5 localStorage error with Safari: “QUOTA_EXCEEDED_ERR: DOM Exception 22: An attempt was made to
My webapp have javascript errors in ios safari private browsing:
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How to see full symlink path
...e following if you have python 2.6 (or later) installed
python -c 'import os.path; print(os.path.realpath("symlinkName"))'
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How to log request and response body with Retrofit-Android?
...Log("YOUR_LOG_TAG")), it helped me.
UPDATE. You can also try for debug purpose use retrofit.client.Response as response model
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How to check if command line tools is installed
I have a macbook pro with OS X 10.8.2.
XCode is installed. I know this as it appears in the Applications directory.
There are also the xcodebuild and xcode-select files in /usr/bin
I need to know if the command line tools is installed.
Is there a command for it?
What can I do to see if XCode CLT is ...
Two versions of python on linux. how to make 2.7 the default
...t the change to be persistent, and now when you type python it runs your chosen 2.7, but when some program on your system tries to run a script with /usr/bin/env python it runs the standard 2.6.
Alternatively, just create a virtual environment out of your 2.7 (or separate venvs for different proj...
What is the best practice for dealing with passwords in git repositories?
...onfig, then you would commit a file called foobar.config.example to the repository, containing sample data. To run your program, you would create a local (not tracked) file called foobar.config with your real password data.
To filter out your existing password from previous commits, see the GitHub ...
How to get current memory usage in android?
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@SanjayJoshi That's because the availMem variable contains the memory in bytes. 1024 Bytes equals 1 KiloByte and 1024 kilobytes equals 1 MegaByte. So 1024 * 1024 equals 1048576
– Rolf ツ
Apr 3 ...