“IBM 2821 Control Unit”的意思、由来-开放百科全书

词条

IBM 2821 Control Unit

释义

External links

The IBM 2821 Control Unit attaches card readers, card punches and

line printers to the IBM System/360 and IBM System/370 families of computers.

The devices attached are 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 25,^[1] 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

{{cite manual

| author = IBM
| title = IBM 2821 Component Description
| id = A24-3312-7
| version = Eighth Edition
| date = November 1969
| url = http://bitsavers.trailing-edge.com/pdf/ibm/28xx/2821/A24-3312-7_2821_Component_Descr_Nov69.pdf}}

{{cite manual

| author = IBM
| title = IBM 2821 Component Description
| id = GA24-3312-9
| version = Tenth Edition
| date = October 1982
| url = http://bitsavers.trailing-edge.com/pdf/ibm/28xx/2821/GA24-3312-9_2821_Unit_Description_Oct82.pdf}}

{{cite web

| url = https://www.youtube.com/watch?v=REGjJqrK0WA
| title = Youtube walkthrough of a late IBM 2821 model 2
| author = uniservo |
| accessdate = 2018-03-18}}{{compu-hardware-stub}}

1 : IBM mainframe computers

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