Developed in 1972, Telepen barcode enable representation of all 128 standard ASCII character using limited space. The United Kingdom, universities and libraries use Telepen.
Encoding
Telepen can encode all 128 Standard ASCII values using a three-digit ASCII code, preceded by the character. For example, the carrot symbol ("^") corresponds to ASCII code \094. For a complete list of ASCII values, refer to the ASCII Table.
Structure
Telepen has the following structure:
A start character.
Encoded value.
Check digit. - modulo 127.
Stop Character.
Requirements
To meet conventional printing requirements, Telepen barcodes have a wide to narrow bar ratio of 3:1. Telepen contains no inter-character gaps, but the specification allows them. The Telepen barcodes generated by Toolkit do not contain inter-character gaps. Toolkit automatically calculates and applies the checkdigit.
