12
Bar code reader
User Information
Summary
The Standard 3 of 9 code offers the greatest versatility for
laboratory use. It can encode both letters and numbers, plus a
few punctuation marks, and message length can be varied to
suit both the amount of data to be encoded and the space
available.
Interleaved 2 of 5 code is restricted to numbers but does allow
variable message length.
The other codes are number-only and fixed message length.