HP-19C/HP-97

HP-67/97 were based on the technology of the "20-series" of calculators (HP-25, HP-19C etc.) introduced a year earlier. The two models are functionally equivalent

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

HP calculators are various calculators manufactured by the Hewlett-Packard company over the years. Their desktop models included the HP 9800 series, while

700 hp (520 kW) R-1300-3 engine, redesignated UH-19B in 1962, 264 built. SH-19B H-19Bs modified for air-sea rescue, redesignated HH-19B in 1962. H-19C U

HP-19C ·HP-25 · HP-25C ·HP-28C ·HP-28S ·HP-29C ·HP-32S ·HP-32sII ·HP 35s · HP-41C · HP-41CV ·HP-41CX ·HP-42S ·HP-48SX ·HP-48G ·HP-48GX · HP-49 · HP-50