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What is a QR code? This article will make you understand instantly!
1. What is a QR Code? In Simple Words.
Simply put, a QR code is like a "portable gateway" for information.
It can turn a website link, a piece of text, a digital business card, or even a Wi-Fi password into a black-and-white square...
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Test of bad pixels on mobile phones and computer , and imaging principles of screens
Nowadays, mobile phone and computer screens have become an essential part of people’s daily lives and work. Whether it’s handling documents, watching videos, or doing professional design, the display quality of the screen directly affects the user...
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