Description:
RPN calculator based on HP-42S
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Type: Cask
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Latest Version: 1.3.15@0
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Tracked Since: Dec 28, 2025
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Links:
Homepage |
formulae.brew.sh
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Category: Productivity
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Tags:
calculator
rpn
scientific
hp42s
mathematics
productivity
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Install:
brew install --cask plus42-decimal
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About:
Plus42 Decimal is a powerful RPN calculator application that faithfully emulates the HP-42S scientific programmable calculator. It offers high-precision decimal arithmetic, making it ideal for engineering, scientific, and financial calculations where accuracy is paramount. The application includes a full-featured programmable environment and supports extensive binary and decimal number handling.
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Key Features:
- High-precision decimal arithmetic engine
- Full HP-42S function and programming compatibility
- Support for binary numbers and hexadecimal operations
- Large display showing stack, registers, and status
- Extensive user programmability with custom functions
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Use Cases:
- Scientific and engineering calculations requiring high precision
- Financial modeling and currency computations
- Learning and practicing RPN (Reverse Polish Notation) logic
- Legacy HP-42S program execution and development
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Alternatives:
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Free42
– Plus42 offers decimal arithmetic and extended features, while Free42 focuses on binary floating-point emulation.
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Numi
– Numi is a modern macOS calculator with a focus on natural language input, whereas Plus42 is a dedicated RPN emulator.
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| Detected |
Version |
Rev |
Change |
Commit |
| May 4, 2026 10:38pm |
1.3.15 |
0 |
VERSION_BUMP |
4141b70f |
| Apr 21, 2026 10:48am |
1.3.14 |
0 |
VERSION_BUMP |
4166cf62 |
| Jan 13, 2026 7:35pm |
1.3.13 |
0 |
VERSION_BUMP |
7867258e |
| Sep 15, 2025 12:47pm |
1.3.10 |
0 |
VERSION_BUMP |
60dac019 |
| Mar 30, 2024 9:38pm |
1.1.9 |
0 |
VERSION_BUMP |
89a41d4c |
| Feb 11, 2024 4:38pm |
1.1.4 |
0 |
VERSION_BUMP |
93eca4e5 |
| Jan 17, 2024 8:50am |
1.1.3 |
0 |
VERSION_BUMP |
65f94e43 |
| Dec 9, 2023 7:04pm |
1.1.2a |
0 |
VERSION_BUMP |
8be84f52 |
| Dec 1, 2023 11:40am |
1.1.1 |
0 |
VERSION_BUMP |
dd73eeee |
| Nov 29, 2023 11:34pm |
1.1 |
0 |
VERSION_BUMP |
560fb048 |
| Apr 17, 2023 1:59pm |
1.0.18 |
0 |
VERSION_BUMP |
3b8e847f |
| Apr 15, 2023 6:13am |
1.0.17a |
0 |
VERSION_BUMP |
3674c398 |
| Apr 9, 2023 11:50pm |
1.0.17 |
0 |
VERSION_BUMP |
efc4212f |
| Mar 20, 2023 11:54am |
1.0.16 |
0 |
VERSION_BUMP |
a9430648 |
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