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SwissMicros DM15L RPN Calculator - HP-15C Clone

Home > Students > Scientific Calculators > SwissMicros DM15L RPN Calculator - HP-15C Clone

SwissMicros DM15L RPN Calculator - HP-15C Clone Image - Click to enlarge

We have a one customer return of a new unit available in Like New condition. It shows only light signs of use and includes all packaging and accessories.

The DM15L is a high-end scientific programmable calcualtor with a root-solver and numerical integration, able to handle complex numbers and matrix operations.

There are three versions of firmware for the DM15L:

  • DM15 firmware
  • DM15 "M80" firmware with extra memory
  • DM15 "M1B" firmware with even more memory
The M80 and M1B firmware versions contain modified ROMs to enable a larger number of registers. The hex number after 'M' is actually the memory location where the usable RAM area starts (memory location of the NUT CPU). The RAM of the original HP-15C starts at address 0xC0; the M1B and M80 variants' RAM starts at 0x1B and 0x80 respectively.


  • Construction: Case made from a sand-blasted Grade 1 Titanium housing, brown anodized and laser engraved
  • Software: ARM microcontroller emulating the NUT processor
  • Processor: LPC1115 32-bit ARM Cortex-M0 microcontroller
  • Memory: 64 kB internal flash, 8kB RAM
  • Display Type: Reflective Positive FSTN
  • Display Resolution: 132 16 pixels
  • Display Active Area: 69.1 mm 10.0 mm / 2.72" x 0.39"
  • Display Dot Pitch: 524 m 626 m
  • Connectivity (PC): USB Mini-AB port for firmware update and data exchange via CDC
  • Battery Type: 1 CR2032 lithium coin cell, 3.0 volts
  • Battery Life: Up to 5 years
  • Sound: 4 kHz resonance frequency Piezo-electric buzzer
  • Size: 129 mm 79 mm 13 mm / 5.08" x 3.11" x 0.51"
  • Weight: 150 g / 5.29 oz
  • Warranty: 5 years

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Find it new or used for less!

Related Products
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Hewlett Packard HP-15C Collector's Edition RPN Scientific Calculator

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