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- IBM_2821_Control_Unit abstract "The IBM 2821 Control Unit was used to attach card readers, card punches andline printers to the IBM System/360 and IBM System/370 families of computers.The devices attached were as follows: The IBM 2540 card reader and card punch; The IBM 1403 models 2, 3, 7 and N1 line printer; and The IBM 1404 model 2 line printer and card reader.Six models of the IBM 2821 Control Unit were available, as follows: Model 1 attached one IBM 2540 and one IBM 1403; Model 2 attached one IBM 1403; Model 3 attached two or three IBM 1403s; Model 4 attached one IBM 2540 and one IBM 1404, but only on IBM System/360 models 30, 40 and 50; Model 5 attached one IBM 2540 and two or three IBM 1403s; and Model 6 attached one IBM 2540.".
- IBM_2821_Control_Unit wikiPageExternalLink A24-3312-7_2821_Component_Descr_Nov69.pdf.
- IBM_2821_Control_Unit wikiPageExternalLink GA24-3312-9_2821_Unit_Description_Oct82.pdf.
- IBM_2821_Control_Unit wikiPageID "24409471".
- IBM_2821_Control_Unit wikiPageRevisionID "549936812".
- IBM_2821_Control_Unit hasPhotoCollection IBM_2821_Control_Unit.
- IBM_2821_Control_Unit subject Category:IBM_computers.
- IBM_2821_Control_Unit comment "The IBM 2821 Control Unit was used to attach card readers, card punches andline printers to the IBM System/360 and IBM System/370 families of computers.The devices attached were as follows: The IBM 2540 card reader and card punch; The IBM 1403 models 2, 3, 7 and N1 line printer; and The IBM 1404 model 2 line printer and card reader.Six models of the IBM 2821 Control Unit were available, as follows: Model 1 attached one IBM 2540 and one IBM 1403; Model 2 attached one IBM 1403; Model 3 attached two or three IBM 1403s; Model 4 attached one IBM 2540 and one IBM 1404, but only on IBM System/360 models 30, 40 and 50; Model 5 attached one IBM 2540 and two or three IBM 1403s; and Model 6 attached one IBM 2540.".
- IBM_2821_Control_Unit label "IBM 2821 Control Unit".
- IBM_2821_Control_Unit sameAs m.07s3bq9.
- IBM_2821_Control_Unit sameAs Q5968614.
- IBM_2821_Control_Unit sameAs Q5968614.
- IBM_2821_Control_Unit wasDerivedFrom IBM_2821_Control_Unit?oldid=549936812.
- IBM_2821_Control_Unit isPrimaryTopicOf IBM_2821_Control_Unit.