HP-19C

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The HP-19C and HP-29C were scientific/engineering pocket calculators made by Hewlett-Packard between 1977 and 1979. They were the most advanced and last models of the "20" family (compare HP-25) and included Continuous Memory (battery-backed CMOS memory) as a standard feature.

The HP-19C included a small thermal printer, one of the very few hand-held scientific calculators to offer such a feature (the HP-97 was a desktop unit, and later models like the HP-41C only supported external printers). Due to the printer's power requirements, the 19C used a battery pack of four AA-sized NiCd cells, adding to the weight of the calculator and printer mechanism.

All other capabilities were the same in both models – RPN expression logic, 98 program memory locations, statistical functions, and 30 registers.

The HP-29C/19C expanded the HP-25's program capabilities by adding subroutines, increment/decrement looping, relative branching and indirect addressing (via register 0 as index).

The HP-19C and HP-29C were introduced at MSRPs of $345^[1] and $195^[2], respectively.

Contents 1 Miscellanea 2 External links 3 Simulators 4 Notes

[edit] Miscellanea

HP's internal code name for the 29C was Bonnie, the 19C was correspondingly named Clyde.

[edit] External links

• The Museum of HP Calculators' article on the HP-19C/29C
  • Interior picture of 19C
• HP-19C and HP-29C pictures on MyCalcDB (database about 70's and 80's pocket calculators)

[edit] Simulators

• HP29 Simulator for Windows NT/2K/XP and Vista (32 bit only)

[edit] Notes

1. ^  $345 in 1977 ≈ $1,100 in 2005 (see Inflation Conversion Factors for Dollars)
2. ^  $195 in 1977 ≈ $630 in 2005 (ibid.)