IBM 2821 Control Unit
Encyclopedia
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:
Six models of the IBM 2821 Control Unit were available, as follows:
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 1403IBM 1403The IBM 1403 line printer was introduced as part of the IBM 1401 computer in 1959 and had an especially long life in the IBM product line. The original model could print 600 lines of text per minute and could skip blank lines at up to 75 inches/second. The standard model had 120 print...
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 1403IBM 1403The IBM 1403 line printer was introduced as part of the IBM 1401 computer in 1959 and had an especially long life in the IBM product line. The original model could print 600 lines of text per minute and could skip blank lines at up to 75 inches/second. The standard model had 120 print...
; - Model 2 attached one IBM 1403IBM 1403The IBM 1403 line printer was introduced as part of the IBM 1401 computer in 1959 and had an especially long life in the IBM product line. The original model could print 600 lines of text per minute and could skip blank lines at up to 75 inches/second. The standard model had 120 print...
; - Model 3 attached two or three IBM 1403IBM 1403The IBM 1403 line printer was introduced as part of the IBM 1401 computer in 1959 and had an especially long life in the IBM product line. The original model could print 600 lines of text per minute and could skip blank lines at up to 75 inches/second. The standard model had 120 print...
s; - 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 1403IBM 1403The IBM 1403 line printer was introduced as part of the IBM 1401 computer in 1959 and had an especially long life in the IBM product line. The original model could print 600 lines of text per minute and could skip blank lines at up to 75 inches/second. The standard model had 120 print...
s; and - Model 6 attached one IBM 2540.