SwissMicros R47 RPN Scientific Calculator
The R47 is a powerful, RPN-based programmable scientific calculator with an extensive feature set. Its software has been refined over many years, born from the vision of a dream calculator developed by a team of engineers and mathematicians, all dedicated calculator enthusiasts. Community-developed and manufactured by SwissMicros, the R47 runs firmware that is functionally identical to that of the C47, which offers a way to transform a DM42n into a feature-rich RPN calculator using a dedicated keypad overlay. The C47/R47 firmware originated as a fork of the WP43 project, itself derived from the WP34S. A core component carried through this lineage is the decNumber library by Mike Cowlishaw for precise decimal arithmetic. IMPORTANT: The R47 firmware is not written, distributed, or maintained by SwissMicros, and any support for the R47 firmware must be requested and handled by the R47 team via email to support@47calc.com. Please see the documentation at https://47calc.com/. The software (firmware) is currently in beta. Software Features: Solve equations and systems of equations Perform numeric definite integration and derivatives Matrix and vector operations including eigenvectors, generalized norms, and specialized support for 2-space and 3-space operations Work with complex numbers which utilize unambiguous notation and are supported for virtually all operations Base-n arithmetic with extensive bitwise logical operators Provides 34 digits of precision; exponents to ±6144; up to 1000 named variables Include scientific functions such as trigonometric, hyperbolic, logarithmic, and exponential functions, plus advanced special functions. Support advanced functions including Bessel, Riemann zeta, Beta, and related functions, with broad support over the complex plane. Feature extensive statistics, including 2-variable statistics, best-fit modelling, a large set of distributions and their inverses, and basic plotting. Create programs using a multi-line editor. Be keystroke programmable with tests, flags, looping, and branching. Conduct financial and date-based calculations, including time value of money operations. Apply built-in unit conversions and a library of constants. Perform date and time math, as well as built-in clock functions. Include an equation writer with support for solving, numeric integration, derivatives, and basic plotting. Support factoring and other operations on 1000-digit integers. Include built-in electrical engineering applications, such as three-phase calculations. Feature 8 stack levels, 3 rows of menus, and an always-on status bar. Offer user-customizable keyboard and softkey-based menus. Restore states, programs, and configuration via USB-C. Maintain backwards compatibility with HP-41 and HP-42 workflows. Hardware Features: Construction: Case made from stainless steel, matte black Physical Vapour Deposition (PVD) coated and laser engraved Software: Custom calculator implementation running on SwissMicros DMCP operating system Processor: Ultra-low-power ARM® Cortex-M33®, at max. 160 MHz Flash Memory: 64 MBit additional flash Floating Point Standard: decNumber library by Mike Cowlishaw Display Type: Monochromatic ultra high contrast (14:1) transflective memory LCD display Display Resolution: 400 x 240 pixels Display Active Area: 58.8 mm x 35.28 mm / 2.31" x 1.39" Display Dot Pitch: 147 µm x 147 µm Connectivity (PC): USB-C, connects as USB mass storage device Battery Type: 1 x CR2032 lithium coin cell, 3.0 volts Pouch: Comes with genuine leatherette pouch Size: 77 mm x 144 mm x 12 mm / 3.03" x 5.66" x 0.47" Weight: 205 g / 7.23 oz Warranty: 5 years