ICT CLASS Ángel
Friday, February 13, 2026
Thursday, February 12, 2026
Thursday, December 11, 2025
Wednesday, November 19, 2025
What Resolution Do You Need to Print an A4 Photo at 200 dpi and 300 dpi?
If you want to print a photo on A4 paper (210 × 297 mm) and keep good print quality, you need to know the correct pixel resolution. Since print resolution is measured in dpi (dots per inch), we first need to convert millimeters to inches.
A4 Size in Inches
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Width: 210 mm ÷ 25.4 ≈ 8.27 inches
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Height: 297 mm ÷ 25.4 ≈ 11.69 inches
1. Required Resolution for A4 at 200 dpi
To calculate the pixel dimensions, multiply each side by 200 dpi:
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Width: 8.27 × 200 ≈ 1654 pixels
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Height: 11.69 × 200 ≈ 2338 pixels
➡️ Required resolution: ~1654 × 2338 px
2. Required Resolution for A4 at 300 dpi
For higher-quality printing, multiply by 300 dpi:
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Width: 8.27 × 300 ≈ 2480 pixels
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Height: 11.69 × 300 ≈ 3507 pixels
➡️ Required resolution: ~2480 × 3507 px
Friday, October 24, 2025
Mobile Security: “My mobile phone is asking me to install my operating system update but I do not feel like doing so...”
The Problem Description
Many people ignore or delay mobile phone updates because they take time, require restarts, or use up storage. However, this behavior can expose your phone to serious security risks. When you don’t update your operating system, your device may become vulnerable to hackers, viruses, or software malfunctions.
This problem is related to security, cybersecurity, and device maintenance.
Name and Definition of the Item
Item: Operating System Update (OS Update)
Definition: An operating system update is a software package released by the phone’s manufacturer to fix bugs, improve performance, and strengthen security. Updates often include security patches that protect your device from new cyber threats.
Good Links to Find Information
Apple – About iOS Updates
Google – Android Security Updates
Five Good Tips to Avoid or Solve the Problem
Enable Automatic Updates – Let your phone update itself when connected to Wi-Fi.
Schedule Updates at Night – Set updates to run while you’re sleeping to avoid interruptions.
Keep Enough Storage Space – Regularly delete unnecessary files or apps to make room for updates.
Back Up Your Data Before Updating – To avoid losing information if something goes wrong.
Stay Informed – Read the update notes to understand what improvements or security fixes are included.
Vote for the best tip here.
The Results of the vote here.🧇
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The Problem Description Many people ignore or delay mobile phone updates because they take time, require restarts, or use up storage. Howeve...
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The motherboard is the main circuit board of the computer. It connects and allows communication between all the different parts of the syst...