Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
electromechanical device
|
| gptkbp:category |
gptkb:personal_computer
Punched card equipment |
| https://www.w3.org/2000/01/rdf-schema#label |
IBM 721 card punch
|
| gptkbp:input |
SD card
|
| gptkbp:introduced |
1952
|
| gptkbp:manufacturer |
gptkb:IBM
|
| gptkbp:output |
SD card
|
| gptkbp:replacedBy |
gptkb:IBM_729
|
| gptkbp:status |
Obsolete
|
| gptkbp:usedFor |
gptkb:IBM_701
gptkb:IBM_7090 gptkb:IBM_7094 gptkb:IBM_704 gptkb:IBM_709 punching holes in punched cards |
| gptkbp:bfsParent |
gptkb:IBM_7080
|
| gptkbp:bfsLayer |
7
|