以下关于矩阵式二维条形码说法不正确的是（ ）。
- A.矩阵式条形码比堆叠式条形码有更高的数据密度，标签依赖于扫描的方向
- B.矩阵式条形码有很好的伸缩性
- C.矩阵式条形码单元可以是方形、六边形或者圆形
- D.矩阵式条形码编码模式使用了检错和纠错技术来改善可读性并可以阅读部分损坏的符号
正确答案及解析
正确答案
解析
本题考查矩阵式二维码的特点。
矩阵式条形码比堆叠式条形具有更高的数据密度，标签不依赖于扫描的方向。矩阵式条形码单元可以是方形、六边形或者圆形，数据通过这些明暗区域的相对应位置进行编码，编码模式使用了检错和纠错技术来改善可读性并可以阅读部分损坏的符号。矩阵式条形码有很好的伸缩性，既可以作为产品上的小标识符，也可以作为运输包装箱上由传送机扫描的符号。
综合分析，本题选A。
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