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File No. 1231 -03
Form A21-9012-3
Systems Reference Library
IBM 1231, 1232 Optical Mark Page Readers
This publication describes the functions, controls, principles of operation, data flow,
and programming for the IB~1 1231 and 1232 Uptical ~1ark Page Readers. Special
features available are explained. Also included is a section on the IBM 534 Model 3
Card Punch.
This publication, form A21-9012-3, replaces and obsoletes form
A21-9012-2. Information from technical newsletter N21-OO23 is
included. Changes to text are indicated by a vertical line to the
left of the column. Changes to illustrations are indicated by a
bullet (.) to the left of the figure title.
Copies of this and other IBM publications can be obtained through
IBM Branch Offices. Address comments concerning the content
of this publication to:
IBM, Product Publications Department. Rochester. Minn. 55901.