|
The IBM 2821 Control Unit was used to attach card readers, card punches and line 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. ==External links== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「IBM 2821 Control Unit」の詳細全文を読む スポンサード リンク
|