PX-42F, a new calculator in the spirit of the legendary HP-42S.
Features:
-
Runs Plus42 by Thomas Okken: the HP-42S, enhanced with equations, units, plotting, the solver and matrices.
-
34-digit decimal arithmetic: 0.1 + 0.2 is exactly 0.3.
-
RP2350 microcontroller with 16 MB of flash.
-
Ultra-low-power monochrome reflective LCD, 250x122 pixels, from 2 to 12 lines, with three fonts you can replace with your own.
-
Built-in 1100 mAh Li-ion battery, charged over USB-C. Months of standby on a charge.
-
USB drive: copy states, programs (.raw), fonts, sounds and splash images to and from your computer.
-
Speaker with key sounds, and any WAV file of your own.
-
Infrared LED: turn the calculator into a TV remote.
-
Games and apps written in C, plus PX-BASIC and a spreadsheet.
-
Real-time clock with calibration, and a clock on the splash screen while off.
-
Drag-and-drop firmware updates. No software needed.
-
and more...
Gallery
PX-42F screens, as the calculator draws them:
The stack, after Memory Clear
The settings menu
Key sounds
The splash screen while off
Export programs to the drive
Plus42 with decimal math
Snake
Graphics in PX-BASIC
A budget in the Spreadsheet
Spreadsheet: a row filled down
Gold Runner
Gold Runner: a new level
More than a calculator
Plus42
The full HP-42S, enhanced: equations, units, plotting, the solver and matrices, with 34-digit decimal math. States and programs move to and from Plus42 on your computer.
User Manual
PX-BASIC
A Tiny BASIC with the calculator's 34-digit numbers, graphics and sound. Programs are saved as text files.
BASIC Manual
Spreadsheet
Cells A1 to Z999 with Excel's formulas, worked out in the calculator's 34-digit decimals. Sheets are CSV files that open in Excel or Numbers.
Spreadsheet Manual
IR Remote
Load remote-control codes in the Flipper Zero format and use the keyboard as a remote for your TV or amplifier.
IR Manual
Gold Runner
A platform game: take all the gold, dig holes to trap the guards, then climb out. Six levels built in, and your own from a text file.
Game Manual
Write your own apps
Games and apps in C with the PX-42F App Template: screen, keys, sound, files, USB and infrared, with a simulator for your computer.
App ManualThe PX-42F runs Plus42 by Thomas Okken, ported to the PX-42F by Alex Garza, with decimal arithmetic by the Intel Decimal Floating-Point Math Library. Special thanks to the incredible community at "The Museum of HP Calculators" Forum.
Got any questions or need more info?
Have an idea you'd like to share, or want to contribute?
Don't hesitate to contact me!
Where to buy
Coming Soon