![]() ![]() HP can claim many of the firsts in this industry, including the first "shirt-pocket" scientific calculator (HP-35), the first pocket programmable calculator (the HP-65), the first pocket calculator with alphanumeric capability (the HP-41) and more. "Hewlett-Packard Calculators".To most calculator owners, the name Hewlett-Packard is synonymous with the highest quality in handheld calculating devices. "HP 10C Series Technology and Packaging". ELECTRONIC PACKAGING and PRODUCTION Magazine. "A look inside Hewlett-Packard's HP-11C". ![]() Hewlett-Packard HP-15C Advanced Functions Handbook (PDF). ![]() Hewlett-Packard Company, Corvallis Division. Hewlett-Packard HP-15C Owner's Handbook (PDF).^ a b "HP Forum Archive 21 Message Index".^ "Firmware V29 for DM1x/DM41(L) units.^ "HP Forum Archive 20 Message Index".^ "HP reincarnates calculators on iPhone, Windows".^ "Hewlett-Packard ships official HP 15c app for Android - Hacker News".^ HP 15C Limited Edition LE Scientific Calculator Self-tests, retrieved.^ HP 15C LE PSE / Pause Bug Fix, retrieved."HP-15C LE (Limited Edition) Bug Reports". ^ HP 15C Synthetics and Synthetic Programming, retrieved.^ "Product End-of-Life (EOL) Notification" (PDF).^ "Filter News Results - HP Newsroom HP Press Releases".List of Hewlett-Packard products: Pocket calculators.It still comes with a USB Mini-B connector. In September 2015, SwissMicros introduced the DM15L, a version of the calculator about the same size as the original HP-15C. for backup purposes and possibly to communicate with applications (like PC-based HP-15C emulators) or to update the firmware. Deviating from the original, these calculators feature a dot-matrix display, switchable fonts and clock speeds, and, based on a Silicon Labs CP2102 converter chip, they come with a USB ( Mini-B) serial interface to exchange data with a PC etc. A DM15 Silver Edition in a titanium case is available as well in three color variants (metal, brown, blue). With a modified firmware (M80 and M1B), the additional memory allows for up to 129 or even 230 registers and up to 1603 or 896 programs steps. Newer DM15 models feature a better keyboard and more RAM ( LPC1115). It closely emulates the functionality of the original HP-15C by running the original ROM image in an emulator on an ARM Cortex-M0-based NXP LPC1114 processor. On 6 February 2012, SwissMicros (previously known as RPN-Calc) introduced a miniature clone named DM-15CC approximating the size of an ID-1 credit card (88 mm × 59 mm × 7 mm). Another version is commercially available for Android and iOS devices. Īn official PC emulator for the 15C is available as freeware from Hewlett-Packard. The original manual did not include the new self-test procedure. The original HP-15C self-test keystrokes do not work with the HP-15C LE and can corrupt memory contents.Downgrading the firmware resolves the PSE bug, however, other bugs will also be reintroduced. One of the more significant bugs in the released firmware version (dated in the self-test) is that PSE only works once in a program and subsequently blanks the display until the program stops or is stopped.The non-responsive reset procedure documented in the 15C manual had the side effect of rotating the X register by 22 bits which could then be used to perform synthetic programming.This model is powered by two CR2032 batteries, and can easily be differentiated from the original model by the "Limited Edition" script below the company logo as well as the black text on brushed metal back label, as opposed to the white text on black of the original.The power consumption of the processor is greater than that of the original HP-15C, as HP did not use the same technology in any of the future models. The calculator was released alongside the HP 12c 30th Anniversary Edition. It is based on a flashable controller utilizing the same ARM7TDMI core already used in the 2008 revision of the 12C but in a different package, an Atmel AT91SAM7L128-AU running an emulator written by Cyrille de Brébisson to execute the old HP Nut code much faster than on the original hardware. ![]() HP 15c Limited Edition Īfter showing a prototype labelled " HP 15c+" at the HHC 2010, HP announced the HP 15c Limited Edition (NW250AA) on 1 September 2011. ![]()
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