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1. Hp rpn scientific calculator 42s manual#
2. Hp rpn scientific calculator 42s upgrade#
3. Hp rpn scientific calculator 42s series#
4. Hp rpn scientific calculator 42s simulator#

Hp rpn scientific calculator 42s manual#

Hp rpn scientific calculator 42s simulator#

The calculator, which comes in a stainless steel case with matte black physical vapor deposition (PVD) coating, supports keyboard overlays and is based on a modified version of Thomas Okken's GPLed Free42 simulator with Intel's decimal floating-point math library for higher precision ( decimal128) running on an STM32L476RG processor ( ARM Cortex-M4 core, 128 KB RAM, 1 MB internal flash) with another 8 MB of external QSPI flash (of which ca. 75 KB usable RAM, a beeper, a callable real-time clock as well as an infrared port for HP 82240A/ HP 82240B printer support and a USB interface (with Micro-B connector) emulating a FAT16-formatted USB mass storage device for easy program transfer and state backup / transfer as well as for firmware updates. Even though slightly smaller (144×77×13 mm, 170 g) than the original HP-42S (148×80×15 mm, 170 g), the calculator comes with an additional top row of keys for soft menus, a keyboard layout supporting direct alpha character input, a much larger high-contrast display ( Sharp low power transflective memory LCD with a resolution of 400×240, protected by Gorilla Glass) showing all four stack levels at once (configurable), ca. The final product was released on the 9 December 2017.

In May 2017, SwissMicros released pre-production samples of an RPN calculator closely resembling the HP-42S, the DM42. Returns control (and result in X) to either the user or to a calling program. Recall stack register Y and multiply with Xĭecrement stack register Y and if not zero.

Hp rpn scientific calculator 42s series#

The ability to run programs written for the HP-41C series of calculatorsġ is put into X, hence the value to be calculated upon (which was initially in X) is lifted (pushed) into stack register Y.Programmability (keystroke programming with branching, loops, tests and flags).Catalogs for reviewing and using items stored in memory.Base conversion, integer arithmetic and binary and logic manipulation of numbers in binary, octal, decimal and hexadecimal systems.Menus with submenus and mode settings (also custom programmable) that use the bottom line of the display to label the top row of keys.Graphic display with graphics functions and adjustable contrast.Named variables, registers and binary flags.Complex numbers (including polar coordinates representation).Matrix operations (including a matrix editor, dot product, cross product and solver for simultaneous linear equations).Numerical integration for calculating definite integrals.Equation solver (root finder) that can solve for any variable in an equation.Probability (including factorial, random numbers and Gamma function).Statistics (including curve fitting and forecasting).All basic scientific functions (including hyperbolic functions).Peripherals: HP 82240A infrared printer.

Hp rpn scientific calculator 42s upgrade#

Expandability: Officially no other than IR printing (32 KB memory upgrade and over-clocking hardware hacks are possible).As this calculator is regarded amongst the best ever made in terms of quality, key stroke feel, ease of programming, and daily usability for engineers, in the HP calculator community the 42S has become famous for its high prices in online auctions, up to several times its introduction price, which has created a scarcity for utility end users. Additionally, it features a two-line dot matrix display, which made stack manipulation easier to understand. The 42S, however, has a much smaller form factor than the 41, and features many more built-in functions, such as a matrix editor, complex number support, an equation solver, user-defined menus, and basic graphing capabilities (the 42S can draw graphs only by programs). Since it lacked expandability, and lacked any real I/O ability, both key features of the HP-41 series, it was marketed as an HP-15C replacement. Perhaps the HP-42S was to be released as a replacement for the aging HP-41 series as it is designed to be compatible with all programs written for the HP-41. It has advanced functions suitable for applications in mathematics, linear algebra, statistical analysis, computer science and others. The HP-42S RPN Scientific is a programmable RPN Scientific hand held calculator introduced by Hewlett Packard in 1988. 12 display digits (15 digits internally), exponent ±499ģ×1.5V button cell batteries (Panasonic LR44, Duracell PX76A/675A or Energizer 357/303)