My collection represents only a small fraction of Hewlett Packard calculators.

Graphical calculators

Scientific calculators

FInance calculators


Any other emulators missing to the list? contact me

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HP 11C Scientific Calculator
The #HP-11C was a mid range scientific programmable calculator. Compared to the previous series it would fall between the HP-33E/C and HP-34C. It also included two new features: a built-in random number generator and a backspace key that allowed numbers to be corrected a digit at a time. …
1263 Days ago
HP 39GS newly added to my collection
The latest addition to my collection: a hp39gs #calculator paid 5€ …
1304 Days ago
HP 39GII newly added to my collection
The HP 39gII (NW249AA) was released in October 2011. It is built around an 80 MHz Freescale (formerly SigmaTel) STMP3770 processor with ARM926EJ-S core and features 256 KB RAM and 128 MB flash memory (of which ca. 240 KB RAM and 80-105 MB flash are available to users). The high-resolution monochrome gray-scale LCD provides 256x128 pixels. Connectivity is provided through a USB-OTG Micro-AB connector. The BCD math libraries internally used by the #calculator were rewritten in platform-independent C code run …
1304 Days ago
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par Cédric Walter 1996 Cet article permet de comprendre comment afficher des niveaux de gris sur HP48, un programme ASM y fait suite. Technique des niveaux de gris Pour afficher des niveaux de gris, il suffit de changer rapidement d'image et de jouer sur la persistance rétinienne de l'oeil. Pour changer rapidement d'écran, on modifie l'adresse en 120h (écran affiché en cours). Pour modifier les images à la bonne vitesse, il faut lire le compteur de ligne en 128h, 6 …
1839 Days ago