![]() 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. The 15C used CMOS technology for its processor, resulting in very low power consumption. The HP-15C was a replacement for the HP-34C. Although out of production, its popularity has led to high prices on the used market. The calculator is able to handle complex numbers and matrix operations. A member of Hewlett-Packard Voyager series of programmable calculators, it was produced between 19. The HP-15C is a high-end scientific pocket calculator with a root-solver and numerical integration. The HP-15C is a high-end scientific programmable calculator of Hewlett-Packard's Voyager series produced between 19. The BIFL Sidebar Request Series.USD 135 (Original) USD 99.99 - USD 179.99 (15C LE) The mods are somewhat flexible with the rules as long as the OP explains in the comments. Please remember to abide by Reddiquette.To make it easier for the community to help, also include your budget (if any) and what country you are buying in.Ħ please be descriptive with your posting, posts must include the products brand, years owned or date of purchase, circa the decade is acceptable on items older than 1990Ĩ /r/BuyItForLife is not a place to advertise your business or sell your product. Requests Must be flaired with the request flair and if you are satisfied with the answers please mark the post as such.Ģb be sure to first use the search bar and check the sidebar before making a request. Products that are well-made and durable (even if they won't last a lifetime) are accepted.Ģa Requests are posts where you are looking for help/recommendations on a certain type of a product or Opinions on a certain item. For practical, durable and quality made products that are made to last.ġ This is a subreddit emphasizing products that are Durable, Practical, Proven, and Made-to-Last. ![]()
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