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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. Users could develop software for the HP-29C/19C, such as a prime number generator. The calculators expanded the HP-25's program capabilities by adding subroutines, increment/decrement looping, relative branching and indirect addressing (via register 0 as index). HP's internal code name for the 29C was ''Bonnie'', the 19C was correspondingly named ''Clyde''. The HP-19C and HP-29C were introduced at MSRPs of $345〔$345 in 1980 ≈ $910 in 2010 (see (Inflation Conversion Factors for Dollars ))〕 and $195,〔$195 in 1980 ≈ $510 in 2010 (ibid.)〕 respectively. == External links == *(The Museum of HP Calculators' article on the HP-19C/29C ) * *(Interior picture of 19C ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「HP-19C/-29C」の詳細全文を読む スポンサード リンク
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