条码生成器

Valid Characters

Explanation

• Known also as USS Code 39, 3 of 9.
• Code 39 can encode alphanumeric characters.
• The symbology is used in non-retail environment.
• Code 39 is designed to encode 26 upper case letters, 10 digits and 7 special characters.
• Code 39 has a checksum but it's rarely used.