Why QR Codes Are More Than Just Squares

课文

1. QR codes store data in black-and-white modules arranged in a square grid, readable by smartphone cameras.

   二维码通过黑白模块组成的方形网格存储数据，智能手机摄像头可直接读取。

2. Each code contains alignment patterns, timing markers, and error-correction codes that let devices decode information even if part is damaged.

   每个二维码都包含定位图案、定时标记和纠错码，即使部分受损，设备也能准确解码信息。

3. They hold far more data than traditional barcodes—up to 4,296 alphanumeric characters in one standard version.

   其数据容量远超传统条形码——标准版本单码最多可存4296个字母数字字符。

4. When you scan a QR code, your phone’s camera captures light and dark areas, then software converts them into binary digits.

   扫描时，手机摄像头捕捉明暗区域，软件将其转换为二进制数字。

5. These digits are decoded using Reed–Solomon error correction, which recovers lost or blurred data reliably.

   这些二进制数字通过里德-所罗门纠错算法解码，能可靠恢复丢失或模糊的数据。

6. Businesses use them for contactless menus, payment links, and product traceability from factory to shelf.

   企业用它实现无接触菜单、支付链接及产品从工厂到货架的全程溯源。

7. Educators embed them in textbooks to link students directly to videos, quizzes, or 3D simulations.

   教育者将二维码嵌入教材，让学生一键直达视频、测验或3D模拟资源。

8. Unlike URLs typed manually, QR codes reduce input errors and speed up access to digital resources significantly.

   相比手动输入网址，二维码大幅减少输入错误，显著提升数字资源访问速度。

9. Newer versions support dynamic content—meaning the destination link can be updated remotely without reprinting the code.

   新版支持动态内容——目标链接可远程更新，无需重新打印二维码。

10. This tiny technology bridges physical objects and digital information seamlessly and securely.

    这项微小技术无缝且安全地连接物理对象与数字信息。