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The HP-65 was the first programmable pocket calculator. |
The HP-65 was HP's
fourth handheld electronic calculator and its third scientific calculator.
Nicknamed "Superstar," the HP-65
was the first magnetic card-programmable handheld calculator, which
is why some call it the "world's first handheld computer." The HP-65
could read from and write to magnetic cards, allowing the user to
buy program cards from HP or
save programs on cards.
Although the HP-65 was similar to the HP-35, HP's first handheld
scientific calculator, new features included a card reader, the
slot to hold a card below the display and the second slider switch
to select program or run modes. The HP-65 cost $795 when it was
introduced.
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