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Model DM42n

Flagship, Portrait
Model DM42n

Description

The DM42, one of our flagship line-up of RPN calculators, is a true homage to the legendary HP-42S, widely regarded as one of the most desired calculators ever made. The DM42 is the most precise calculator on the worldwide market - second to none - and uses the powerful and proven RPN logic. The DM42 runs Free42, based on a decimal floating-point math library and IEEE 754-2008 quadruple precision decimal floating-point, encoding numbers in 16 bytes and giving 34 decimal places of precision with exponents ranging from -6143 to +6144.

  • 34-digit mantissa for ultimate handheld precision
  • Uses proven RPL logic
  • Programmable
  • Alphanumeric display
  • Custom program labels execute upon a single key press
  • Solver
  • Integration
  • Matrix operations
  • Complex numbers support

  • USB-C I/O for complete and easy calculator contents backup
  • Sleek and sturdy hardware based on a stainless steel shell
  • Multi-line program editor
  • Fast STM32U5 CPU
  • Single coin-cell operation
  • Low power - long battery life

Please find the online User Manual DM42

Specifications

Specification Specifications
Construction case made from stainless steel, matte black Physical Vapour Deposition (PVD) coated and laser engraved
Software Open Source Free42 running on SwissMicros Operating System (no emulation)
Processor ultra-low-power ARM® Cortex-M33®, at max. 160 MHz
Flash memory 64 MBit additional flash
Floating Point Standard IEEE 754-2008 128-bit floating point precision implementation
ISO Conformity ISO/IEC TR 24732
Display type monochromatic ultra-high contrast (14:1) transflective memory LCD display
Display resolution 400 × 240 pixels
Display active area 58.8 mm × 35.28 mm
Display dot pitch 147 µm × 147 µm
Connectivity (PC) USB-C, connects as USB mass storage device
Battery type 1 × CR2032 3V lithium coin cell
Size 77 mm × 144 mm × 12 mm
Weight 180 g
Warranty 5 years
Documentation DM42 User Manual