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Reference Manual

IBM 1401 Data Processing System
MAJOR REVISION (April, 1962)
This edition, A24-1403-5, obsoletes A24-1403-4 and all earlier
editions. Significant changes have been made throughout the
manual, and this new edition should be reviewed in its entirety.
This edition also obsoletes these publications:
G24-1438 IBM 1401 Data Processing System Bulletin
Early Card Read Special Feature for IBM 1402
Card Read-Punch
G24-1458 IBM 1401 Data Processing System Bulletin
Processing Overlap
G24-1461 IBM 1401 Data Processing System Bulletin
Processing Overlap: Processing Time During
Magnetic Tape Operations
N24-0001 No.1 Oct. 23, 1961
N24-0004 No.2 Oct. 30, 1961
N24-0005 No.3 Oct. 31, 1961
N24-0009 No.4 Dec. 18, 1961
N24-0010 No.5 Dec. 18, 1961
N24-0018 No.6 Feb. 28, 1962