Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
calculator
|
| gptkbp:countryOfOrigin |
gptkb:United_States
|
| gptkbp:dimensions |
5.8 x 3.2 x 1.3 inches
|
| gptkbp:discontinued |
1978
|
| gptkbp:displayType |
gptkb:LED
|
| gptkbp:function |
32
|
| gptkbp:hasModel |
Woodstock series
|
| https://www.w3.org/2000/01/rdf-schema#label |
HP-21
|
| gptkbp:input |
gptkb:Reverse_Polish_Notation
|
| gptkbp:introduced |
1975
|
| gptkbp:manufacturer |
gptkb:Hewlett-Packard
|
| gptkbp:notableFor |
first HP scientific calculator with trigonometric and logarithmic functions in a compact size
|
| gptkbp:powerSource |
gptkb:battery
|
| gptkbp:predecessor |
gptkb:HP-35
|
| gptkbp:successor |
gptkb:HP-25
|
| gptkbp:weight |
6.3 ounces
|
| gptkbp:bfsParent |
gptkb:HP_calculators
|
| gptkbp:bfsLayer |
6
|