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Technical Articles

System Tutorial

An entry-level interface testing tool: Postman

Postman is an API tool that is perfect for developers and testers. You can visit Postman's official website for more information: Postman official website. Postman can not only debug basic information such as simple CSS, HTML and scripts, but also send almost all types of HTTP requests. Postman supports a variety of operating systems, including Mac, Windows, and Linux, and also supports the installation of Postman browser extensions. Postman API Development Environment Postman API Development Environment (ADE) adopts a combination mode, including data collection, tool space and tool set, as shown in the figure below: Postman's security

Sep 11, 2025 am 11:42 AM

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[Urgent Notice] Downloading the R package but failing to connect to the Internet? The pain for beginners

Recently, we have received many help information from beginners about the difficulty of installing R packages, especially when downloading R packages, the problem of networking failure occurs. The following is the solution we provide, which is still the url.method configuration method developed previously: When installing the R package and downloading files on a Windows computer, you can solve the problem through the following code: options(download.file.method='libcurl') options(url.method='libcurl') After using these settings, the installation and file download of the R package should be smooth. However, why are the previous difficult and complicated diseases now becoming epidemics? Although the reason is unknown, our lecturer helps

Sep 11, 2025 am 11:39 AM

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7 Ways to Stop Your Windows Laptop From Overheating

IfyourWindowslaptopoverheats,trythesesteps:1.Cleanventswithcompressedair.2.Useacoolingpad.3.Switchtopower-savingmode.4.Elevateforbetterairflow.5.Closeheavyapplications.6.UpdateBIOSanddrivers.7.Reapplythermalpasteifneeded.

Sep 11, 2025 am 11:39 AM

How to solve the problem of using Tencent Meeting to share screen video without sound when using win10

Recently, some users have encountered the problem of no sound when sharing screens through Tencent Meeting when using Windows 10. Tencent Meeting has been widely praised by users for its simple operation interface, high-definition and stable image quality and reliable security, but some users encounter the situation where sound cannot be transmitted normally when sharing the screen. If you have a similar problem, you might as well refer to the following methods to try to solve it. How to solve the problem of no sound on Tencent Meeting Sharing Screen in Windows 10 First, in the system's recording device settings, activate the stereo mixing function. Next, in Tencent Meeting’s audio settings, adjust the microphone options to stereo mix. This ensures that other participants can hear the sound or video content you play. But it needs attention

Sep 11, 2025 am 11:36 AM

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Configure static routing with GNS3

After starting GNS3, there will be a new project by default, which can be closed directly. Click the "Edit" menu to add an IOS image file for GNS3. Using the IOS image file you just added, drag out three routers and two PCs, and install a virtual network card for the PC. Complete drag and drop of topology diagram. Check the router's port. Start SecureCRT5.1. Log in to the router using SecureCRT. Configure codes for routers R1, R2, and R3. Start VPCS. After starting VPCS, configure the IP and gateway for both virtual machines, and then perform connectivity tests.

Sep 11, 2025 am 11:33 AM

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How to view mac address in Win7 system

In network devices, we often need to check the MAC address of the machine. The MAC address is the unique identifier of the device, and usually each computer is equipped with a wireless network card and a wired network card. Although you can directly query the IP address through Baidu, how to check the MAC address? Next, I will teach you how to view the MAC address under Windows 7 system. Use the DOS command to view the MAC address and click the "Start" menu, enter "cmd" in the search box (this will be located to the DOS command line tool), and then press Enter. You can also use the shortcut key "WIN R" and then enter "cmd". After pressing Enter, a command prompt window will appear, enter "ipconfig/all", and then press Enter, so

Sep 11, 2025 am 11:30 AM

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Markdown Editor Yu Writer

YuWriterfor Windows provides an installation-free version. After downloading and decompressing the compressed package, you will get a folder called "YuWriter". You can move or copy this folder to any location you like. Start the program To start the program, go to the "YuWriter" folder and double-click the "YuWriter" executable file with a round orange icon. For future use, you can right-click the "YuWriter" executable file and select "Send to" > "Desktop Shortcuts", so that you can start the program through the shortcuts on the desktop. Software Update When You Download YuWriter's New

Sep 11, 2025 am 11:27 AM

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How to open a program in compatible mode in win10

I believe that users who use Windows 10 system may encounter compatibility problems when using various software on a daily basis. When this happens, we can try to solve the problem through compatibility mode! Today I will teach you how to run programs in compatible mode in Windows 10. Although the release time of Windows 10 system is not long, there is still room for improvement in compatibility, so some software may not work properly. Fortunately, however, Windows 10 is backward compatible with earlier versions, such as Windows 8.1 or Windows 7. If a program cannot be used properly in the current system, we can try to run it in compatibility mode. Next, let's take a look at the specific operation

Sep 11, 2025 am 11:24 AM

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Win10 shutdown screen without locking screen tutorial

Many friends have this requirement: turn off the screen when leaving the computer to protect the screen, but do not want to be asked to enter a password to unlock the system. In fact, this goal can be achieved through simple settings. Next, let’s take a look at the specific operation method together. The tutorial on closing the screen without locking the screen in Win10 First open the settings window and select the "Personalization" option. Click "Lock Screen Interface" in the menu on the left. Next click "Screen Saver Settings" below. Uncheck "Show login screen when recovery". Then click "Change Power Settings". Select the corresponding settings item in the menu on the left. Set a time to turn off the monitor and adjust the sleep mode to "Never". Return to the previous power settings page and select the sleep time on the right

Sep 11, 2025 am 11:21 AM

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Win10 simple setting of timing shutdown method

Want to easily set up timed shutdown in Windows 10? Sometimes due to work needs, we need to make the computer automatically turn off at a specified time, and then we will teach you how to operate it. The first step is to first press the shortcut key Win R on the keyboard, call up the run window, then enter "CMD", and finally click the Enter button. In the second step, enter "Shutdown-s-t3600" in the open command prompt interface and press Enter. The number "3600" here represents the length of time in seconds. The third step is, if you need to cancel this timed shutdown plan, just run the "Shutdown-a" command again. The above is about how to easily set up timed shutdown in Windows 10

Sep 11, 2025 am 11:18 AM

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How to Fix Windows Update Error: 0x80240034

IfyouencounterWindowsUpdateerror0x80240034,trythesesteps:1.RuntheWindowsUpdateTroubleshooter.2.RestartBITSandWindowsUpdateservices.3.RenametheSoftwareDistributionfolder.4.RunSFCandDISMtorepairsystemfiles.

Sep 11, 2025 am 11:15 AM

How to solve the problem of Win10 1909's default save location?

As an operating system that many users are using, Win101909 version often needs to modify the files and information on the computer. If you encounter the problem that Win101909 prompts that the default save path cannot be set during operation, the editor believes that it may be caused by an exception in the system file, and you can repair it through the registry editor at this time. Next, let’s follow the editor to learn about the specific solutions! Win101909 cannot set the default save path solution method 1: 1. Press the shift key on the login page, then click the [Power] icon, then click [Restart] 2. Enter [Troubleshooting] -> [Advanced Options] -> [Start Settings], then click [Restart] 3. After restarting, press

Sep 11, 2025 am 11:15 AM

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UOS modify the drive letter name (such as Windows' C, D, E disks)

After installing UOS, you may notice that the disk name is different from C, D, E, etc. in Windows systems, but is displayed in storage size, which may not be very easy to distinguish in Explorer. Fortunately, you can modify these disk names to names like C, D, E, etc. for Windows. Execute the following command to modify it: sudoe2label/dev/sda7D There is a potentially confusing thing here, that is, what is /dev/sda7? First, open System Management. Locate and open the partition editor. The partition editor is shown in the figure below: Here, you can see the path /dev/sda7, which represents the partition disk, similar to the D and E disks in Windows.

Sep 11, 2025 am 11:12 AM

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How to uninstall onedrive for Win10 Professional Edition?

OneDrive is a newly released network disk service by Microsoft. In Windows 10 systems, OneDrive is regarded as a function that comes with the system and cannot be completely deleted. Unless it is removed with a special tool, users can only choose to turn it off to stop using it. The specific operation steps are as follows: How to uninstall onedrive for Win10 Enterprise Edition? 1. First, you need to click "Run", then enter gpedit.msc to open the local Group Policy Editor, and then locate it according to the path "Computer Configuration → Administrative Templates → Windows Components → OneDrive". 2. Next, double-click the relevant options found and set their status to "Disabled".

Sep 11, 2025 am 11:09 AM

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