2009年10月28日
Code 39 basics (39条形码原理)
摘要： Code 39 was the first alphanumeric symbology developed, and is widely used in industrial settings. Code 39 has two different element widths, wide and narrow, which are usually specified by giving the ... 阅读全文
posted @ 2009-10-28 20:07 emanlee 阅读(6223) 评论(0) 推荐(2) 编辑