The type of machine, programming language and/or operating system used with computer files and accompanying material. Use field 753 to provide access to the bibliographic record which would otherwise not be possible and to facilitate the capability of selecting and arranging records for production of printed indexes.
1st Indicator
Undefined. The 1st indicator position is undefined and contains a blank ( ).
Undefined
2nd Indicator
Undefined. The 2nd indicator position is undefined and contains a blank ( ).
Undefined
Subfields
‡a Make and model of machine
The make and model of the machine on which the computer file operates.
753
IBM PC
‡b Programming language
The name of the programming language associated with the data comprising the computer (e.g., Pascal).
753
Compaq ‡b Basic ‡c DOS 3.2
‡c Operating system
The name of the operating system.
753
Apple II ‡c DOS 3.3
Printing
Field 753 prints as a heading and a tracing. It prints in uppercase and lowercase as entered or as determined by your profile for 7xx fields. The print program supplies a dash (--) between data in each subfield and a period at the end of the added entry or tracing, unless final punctuation (. ! ?) is present. The heading sorts into the same receiving catalog as
field 710 (Added Entry–Corporate Name). Multiple tracings print in order of appearance in the record.
753
IBM PC ‡c DOS 3.3.
Prints as a heading:
IBM PC--DOS 3.3.
Prints as a tracing (with appropriate Roman numeral):