Condition: IBM NY 1953, 142 pages, double-column text, illustrations, photographs, wiring diagrams throughout.
Categories: 1950's computers and computing, Computer Science, Computers and Society, Databooks, Handbooks, Manuals, IBM, Electronic and Electrical Engineering, Ephemera, Odd Stuff and Miscellaneous, Hardware, Human-Computer Interaction, Programming and Programming Languages, Assembly and Machine Language, Technical Journals, Proceedings, Conferences, Miscellaneous, Word Processing, Data Processing
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Item DescriptionContents include -- Card Feeding and Sensing (card feed unit; column by column feed; digit by digit feed; card sensing, timing, pin sensing, mark sensing, Preventive Maintenance; Punching Mechanisms -- punch control, requirements, sequence, more; Clutch Mechanisms -- Friction drive clutches; Positive Drive clutches;
Commutation and Control -- Relays; Cam-operated contacts; Cam contacts and relays in a typical circuit; Commutators and Emitters; control panels; Accumulating Mechanisms ; Printing Mechanisms; Storage Units; Calculating Mechanisms --type 602A calculating punch; counter operation during multiplications; Electronic Calculator method of calculation, more.