The HP15C corner

The HP-15C is a high-end scientific pocket calculator with a root-solver and numerical integration. A member of Hewlett-Packard Voyager series of programmable calculators, it was produced between 1982 and 1989. The processor used the then new technology of Silicon on Sapphire that allowed ultra-low consumption. The 3 button batteries provided often lasted decades!

For many users, it is the pinnacle of HP calculator engineering together with the HP42s. Due to its popularity, and based on the then-new HP12c ARM-based platform, it was reintroduced in 2011 as HP15c Limited Edition. It was 150 times faster than the original, but it had higher consumption and the batteries would last around 4 months or normal use.

The main capabilities were outstanding, considering the limited keyboard:

Some HP15c related links

• List of known bugs for the HP15c LE
• Programming the HP15c
• Programs for HP15c
• HP15c simulator
• HP15c at the HPCC website
• HP 15C Programming Tutorial - Part 1: The Stack
• HP 15C Programming Tutorial - Part 2: Basic Programming
• HP 15C Programming Tutorial - Part 3: Registers
• HP 15C Programming Tutorial - Part 4: Test
• HP 15C Programming Tutorial - Part 5: Subroutines
• HP 15C Programming Tutorial - Part 6: Loops and Counters
• HP 15C Programming Tutorial - Part 7: Solve and Integration
• HP 15C Programming Tutorial - Part 8: The Summation Program
• HP 15C Programming Tutorial - Part 9: Derivatives
• HP 15C Programming Tutorial - Part 10: Statistics in Programming
• HP 15C Programming Tutorial - Part 11: Flags
• HP 15C Programming Tutorial - Part 12: Memory and Indirect Registers
• HP 15C Programming Tutorial - Part 13: Indirect Addressing and Subroutines
• HP 15C Programming Tutorial: Part 14 - Complex Numbers
• HP 15C Programming Tutorial - Part 15: Memory Exchange (Area of a Polygon)
• HP 15C Programming Tutorial - Part 16: Solving Multiple Input Equations (TVM Program)
• HP15c - Programs and information
• The Calculator Store's own HP15c software page