它包含了字符编码、日期／时间符号、分类规则以及度量系统。
This includes character encoding, date/time notation, sorting rules and measurement systems.
在一个方形图像内至多可编码约4,000个字母数字符号，它们刚刚好可以替代那种窄的收据条。
Able to encode a maximum of about 4,000 alphanumeric characters in a square image, they lend themselves nicely to placement on a narrow receipt slip.
“不等于”符号字符 0x2260 = 0010 0010 0110 0000 编码如下所示
and the "not equal" symbol character 0x2260 = 0010 0010 0110 0000 is encoded as
应用推荐