File types can be divided into: text files: containing only plain text characters image files: digital images, such as photos audio files: digital sounds, such as music video files: images and audio streams, such as movies executable files: Executable instructions, such as application data files: Non-text data, such as financial data Document files: Formatted documents, such as report archive files: Packaged collections of multiple files, such as compressed files
Classification of file types
File type refers to a classification of the content and purpose of electronic files. According to different standards, file types can have multiple classifications Way. The most common classification method is based on the attributes and uses of the file content, which are mainly divided into the following types:
1. Text file:
- Content only Consists of plain text characters and does not contain any formatting information.
- The extension is usually ".txt".
- For example: text documents, code files.
2. Image file:
- Contains digital image information, composed of pixels.
- Common extensions include ".jpg", ".png", and ".gif".
- For example: photos, illustrations, charts.
3. Audio file:
- Digital data that records and plays sound.
- Common extensions include ".mp3", ".wav", and ".aiff".
- For example: music, voice recordings, podcasts.
4. Video file:
- Contains images and audio streams for playing dynamic video content.
- Common extensions include ".mp4", ".mov", and ".avi".
- For example: movies, video tutorials, game recordings.
5. Executable file:
- Contains instructions that the computer can execute to run a program.
- Common extensions include ".exe" (Windows) and ".app" (macOS).
- For example: applications, games.
6. Data files:
- Store specific types of non-text data, such as numbers, database records, and tables.
- Common extensions include ".csv" (comma separated values), ".xlsx" (Excel spreadsheet), ".sql" (SQL database).
- For example: financial data, scientific data sets, customer information.
7. Document file:
- A formatted document containing text, images, charts and other elements.
- Common extensions include ".docx" (Microsoft Word) and ".pdf" (Adobe Acrobat).
- For example: reports, contracts, papers.
8. Archive files:
- Pack multiple files together to save space or facilitate transfer.
- Common extensions include ".zip" and ".rar".
- For example: software installation package, compressed file collection.
The above is the detailed content of What are the file types?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Setting the location of the interpreter in PyCharm can be achieved through the following steps: 1. Open PyCharm, click the "File" menu, and select "Settings" or "Preferences". 2. Find and click "Project:[Your Project Name]" and select "PythonInterpreter". 3. Click "AddInterpreter", select "SystemInterpreter", browse to the Python installation directory, select the Python executable file, and click "OK". When setting up the interpreter, you need to pay attention to path correctness, version compatibility and the use of the virtual environment to ensure the smooth operation of the project.

The main difference between Java and other programming languages ??is its cross-platform feature of "writing at once, running everywhere". 1. The syntax of Java is close to C, but it removes pointer operations that are prone to errors, making it suitable for large enterprise applications. 2. Compared with Python, Java has more advantages in performance and large-scale data processing. The cross-platform advantage of Java stems from the Java virtual machine (JVM), which can run the same bytecode on different platforms, simplifying development and deployment, but be careful to avoid using platform-specific APIs to maintain cross-platformity.

How to stop Microsoft Edge Automatically Update Microsoft Edge is the default browser that comes with Windows 11. Earlier, the Edge browser received updates as the Windows operating system was updated. However, the Edge browser based on Chromium has changed that. The browser will now automatically update in the background without your knowledge. In this article, we will explain how to stop automatic Microsoft Edge updates in Windows 11 and macOS. Related: How to disable automatic updates in Google Chrome? Check for automatic edge updates Chromium-based Edge vs. Goo based on Chromium backend code

The command to start the Apache service on macOS is sudoapachectlstart, and the configuration file is located in /etc/apache2/. The main steps include: 1. Edit the httpd.conf file, modify the Listen port such as Listen8080; 2. Adjust the DocumentRoot path to the personal directory such as /Users/your_username/Sites, and update the corresponding permission settings; 3. Use the sudoapachectlgraceful command to restart Apache to ensure that the configuration takes effect; 4. Enable the mod_deflate module to compress data to improve page loading speed.

The installation and configuration of MySQL can be completed through the following steps: 1. Download the installation package suitable for the operating system from the official website. 2. Run the installer, select the "Developer Default" option and set the root user password. 3. After installation, configure environment variables to ensure that the bin directory of MySQL is in PATH. 4. When creating a user, follow the principle of minimum permissions and set a strong password. 5. Adjust the innodb_buffer_pool_size and max_connections parameters when optimizing performance. 6. Back up the database regularly and optimize query statements to improve performance.

Choosing UC browser or QQ browser depends on your needs: 1. UC browser is suitable for users who pursue fast loading and rich entertainment functions; 2. QQ browser is suitable for users who need stability and seamless connection with Tencent products.

Updating the software that comes with macOS is simple and important because it can fix bugs, improve performance, bring new features and security improvements. You can update through the "Software Update" option in "System Settings" or "System Preferences" and follow the prompts. If you encounter problems, try restarting your Mac or checking your network connection, and the Apple Support page also provides a solution. It is recommended to keep the system up to date, back up data before update, and ensure Wi-Fi and sufficient storage space. Update details can be viewed on Apple's official website.

Adjusting screen brightness on macOS can be fine-tuned using the brightness adjustment keys on the keyboard or through system preferences. 1. Press the Sun icon keys on the F1 and F2 keys to quickly adjust the brightness. 2. Drag the slider in the "Display" option in "System Preferences" to make minor adjustments. 3. Enable the "Auto-adjust brightness" function to make the brightness change with the ambient light. 4. Use the "Night View" mode to reduce blue light to protect your eyes. 5. Developers can use AppleScript to automate brightness adjustments.