- HP-19C
The HP-19C and HP-29C were scientific/engineering
pocket calculator s made byHewlett-Packard between 1977 and 1979. They were the most advanced and last models of the "20" family (compareHP-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 (theHP-97 was a desktop unit, and later models like theHP-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 $345ref|price19 and $195ref|price29, respectively.
Miscellanea
HP's internal code name for the 29C was "Bonnie", the 19C was correspondingly named "Clyde".
External links
* [http://www.hpmuseum.org/hp29.htm The Museum of HP Calculators' article on the HP-19C/29C]
** [http://www.hpmuseum.org/19cint.jpgInterior picture of 19C]
* [http://mycalcdb.free.fr/main.php?l=0&id=790 HP-19C] and [http://mycalcdb.free.fr/main.php?l=0&id=787 HP-29C] pictures on [http://mycalcdb.free.fr MyCalcDB] (database about 70's and 80's pocket calculators)Simulators
* [http://www.hpmuseum.org/guest/miket/rpn29exe.zip HP29 Simulator] for Windows NT/2K/XP and Vista (32 bit only)
Notes
# $345 in 1977 ≈ $1,100 in 2005 (see [http://oregonstate.edu/Dept/pol_sci/fac/sahr/sahr.htm Inflation Conversion Factors for Dollars] )
# $195 in 1977 ≈ $630 in 2005 (ibid.)
Wikimedia Foundation. 2010.
