IBM A24-1401-1 1401 System Summary Sep64 free download

File name A24-1401-1_1401_System_Summary_Sep64.pdf

File No. 1401-00 Form A24-1401-1 Systems Reference Library IBM 1401 System Summary This reference publication contains brief descriptions of the machine features, components, configurations, and special features. Also included is a section on pro- grams and programming systems. Publications providing detailed information on sub- jects discussed in this summary are listed in IB~I 1401 and 1460 Bibliography, Form A24-1495. Major Revision (September 1964) This publication, Form A24-1401-1, is a major revision of and obsoletes Form A24-1401-0. Significant changes have been made throughout the publication. Reprinted April 1966 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, Endicott, New York 13764. Contents IBM 1401 System Summary . ... . 5 System Concepts . ... . 6 Card-Oriented System ... . ... . 11 Physical Features. . . . . . . . . . . . . . ... 11 Interleaving. . . . . . . . .. . ... . 14 Data Flow... ... ... ... ... .. . ... ... .. . ... . 14 Checking ... . 15 Word Mark.. ... ... ... ... ... ... .. . ... ... ... . ... . 15 Stored-Program Instructions. . . . ... . 15 Operation Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 18 Editing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . ... . 18 IBM 1401 Console ... . 19 IBM 1406 Storage Unit. . . ... . 20 Magnetic-Tape-Oriented System . ... . 22 Data Flow ... . 22 Magnetic Tape. 22 Disk-Storage-Oriented System . .. 26 Data Flow ... .