Source : Free On-Line Dictionary of Computing

ASCIIbetical order
     
         /as'kee-be'-t*-kl or'dr/ Used to
        indicate that data is sorted in {ASCII} collated order rather
        than alphabetical order.  The main difference is that, in
        ASCII, all the upper case letters come before any of the lower
        case letters so, e.g., "Z" comes before "a".
     
        [{Jargon File}]
     
        (1999-04-08)