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The HP-45 is the second scientific pocket calculator introduced by Hewlett-Packard, adding to the features of the HP-35. It was introduced in 1973 with an MSRP of US$395 (equivalent to $2,865 in 2025). Especially noteworthy was its pioneering addition of a shift key that gave other keys alternate functions.
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| HP-45 | Dimensions | Length: 5.8 inches (150 mm), width: 3.2 inches (81 mm), height: 0.7–1.3 inches (18–33 mm) | 1.00 | infobox |
| HP-45 | Discontinued | 1976 | 1.00 | infobox |
| HP-45 | Display size | 15 digits (decimal point uses one digit), (±10±99) | 1.00 | infobox |
| HP-45 | Display type | Red LED seven-segment display | 1.00 | infobox |
| HP-45 | Entry mode | RPN | 1.00 | infobox |
| HP-45 | Introduced | 1973 | 1.00 | infobox |
| HP-45 | Memory register | Four-register operational stack with nine addressable memory registers + LASTx register | 1.00 | infobox |
| HP-45 | Power supply | Internal rechargeable battery or 115/230 V AC, 5 W | 1.00 | infobox |
| HP-45 | Programming language(s) | RPN key stroke | 1.00 | infobox |
| HP-45 | Type | Scientific | 1.00 | infobox |
| HP-45 | Weight | Calculator: 9 oz (260 g), recharger: 5 oz (140 g) | 1.00 | infobox |
| HP-45 | is a | second scientific pocket calculator introduced by Hewlett-Packard | 0.90 | text |
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