.jpg)
HP-65
Sign in to savethumb|HP-65 in original hard case with manuals, software "Standard Pac" of magnetic cards, soft leather case, and charger
Key facts
- Calculator.name
- HP-65
- Calculator.image
- HP-65 Programmable Calculator (edited to remove background, optimized colours).jpg
- Calculator.caption
- HP-65 keyboard and display
- Calculator.type
- Programmable
- Calculator.entry
- RPN key stroke
- Calculator.introduced
- 1974
- Calculator.processor
- proprietary
- Calculator.display_type
- Red LED seven-segment display
- Calculator.display_size
- 15 digits (decimal point uses one digit), (±10±99)
- Calculator.prog_lang
- key codes
- Calculator.memory_data
- 8 (9) plus 4-level working stack
- Calculator.memory_step
- 100
- Calculator.supply
- Internal rechargeable battery or 115/230 V AC, 5 W
- Calculator.weight
- Calculator: ,recharger:
- Calculator.dimensions
- Length: ,width: ,height:
via Wikipedia infobox
Article
7 sectionsContents
- Features
- Programming
- Significant applications
- Steve Wozniak
- See also
- References
- External links
thumb|HP-65 in original hard case with manuals, software "Standard Pac" of magnetic cards, soft leather case, and charger
The HP-65 is the first handheld programmable calculator, and it included a magnetic card read/write system for program storage. Introduced by Hewlett-Packard in 1974 at an MSRP of $795 (), it featured nine storage registers and room for 100 keystroke instructions. It also included a magnetic card reader/writer to save and load programs. Like all Hewlett-Packard calculators of the era and most since, the HP-65 used reverse Polish notation (RPN) and a four-level automatic operand stack.