Manuals or user guides for your HP Pavilion 32 32-inch Display. Be nice to have HP-42S ROM images for free just like what happened to HP-48G and other models and keeping PDF versions of the manuals of retired models to download would be nice too. Perhaps someone will listen to me! ☺ A quick note on notation: throughout this manual, for the most part, keys that are to be pressed are.
| Type | |
|---|---|
| Manufacturer | Hewlett-Packard |
| Introduced | 1988 |
| Discontinued | 1995 |
| Calculator | |
| Entry mode | RPN |
| Precision | 12 display digits (15 digits internally),[1] exponent ±499 |
| Display type | |
| Display size | 2 lines, 22 characters, 131×16 pixels |
| CPU | |
| Processor | Saturn (Lewis) |
| Programming | |
| Programming language(s) | RPN key stroke (fully merged) |
| Firmware memory | 64 KB of ROM |
| Program steps | 7200 |
| Interfaces | |
| Ports | IR (Infrared) printing |
| Other | |
| Power supply | 3×1.5V button cell batteries (Panasonic LR44, Duracell PX76A/675A or Energizer 357/303) |
| Weight | 6 oz (170 g) |
| Dimensions | 148×80×15mm |
The HP-42S RPN Scientific is a programmable RPN Scientific hand held calculator introduced by Hewlett Packard in 1988. It has advanced functions suitable for applications in mathematics, linear algebra, statistical analysis, computer science and others.
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. 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.
The 42S, however, has a much smaller form factor than the HP-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 HP-42S can draw graphs only by programs). Additionally, it features a two-line dot matrix display, which made stack manipulation easier to understand.
Production of the 42S ended in 1995.[2] 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,[3] 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.
The HP-42S is keystroke-programmable, meaning that it can remember and later execute sequences of keystrokes to solve particular problems of interest to the user. The HP-42S uses a superset of the HP-41CXFOCAL language.
The HP-42S supports indirect addressing with which it is possible to implement a Universal Turing machine and therefore the programming model of the HP-42S can be considered Turing-complete.
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This is a sample program which computes the factorial of an input integer number (ignoring the calculator's built-in factorial function). The program consumes 18 bytes. No memory registers are used.
| Step | Instruction | Comment |
|---|---|---|
| 01 | LBLFAC | Start of program 'FAC' |
| 02 | 1 | 1 is put into X, hence the value to be calculated upon (which was initially in X) is lifted (pushed) into stack register Y |
| 03 | LBL00 | Define label 00 |
| 04 | RCL×STY | Recall stack register Y and multiply with X |
| 05 | DSESTY | Decrement stack register Y and if not zero .. |
| 06 | GTO00 | .. go back to label 00 |
| 07 | END or RTN | Returns control (and result in X) to either the user or to a calling program. |
In May 2017, SwissMicros released pre-production samples of an RPN calculator closely resembling the HP-42S, the DM42. The final product was released on 9 December 2017. 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. 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 Micro-B interface, emulating a FAT16-formatted USB mass storage device for easy program transfer and state backup / transfer, as well as for firmware updates. 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 GPL Free42 simulator with Intel's decimal floating-point math library for higher precision (decimal128) running on an STM32L476RG processor (ARMCortex-M4 core, 128 KB RAM, 1 MB internal flash) with another 8 MB of external QSPI Flash memory, of which ca. 6 MB are available to users). It is powered by a CR2032 coin cell or via USB, and clocked dynamically at 24-80 MHz. The DM42 is also the hardware basis for the community-developed WP 43S calculator,[5][6] a successor to the WP 34S.