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About 48sx : a vintage RPN calculator

48sx : The HP48 sx emulator !

HP48sx is a vintage RPN calculator. I used this calc 25 years ago ;-) I love this calc....and now I can have it in my pocket every day !

No nag, no Ad, completely FREE!

Droid48sx is a modified version of droid48 but for HP48 SX, credit goes to Arnaud Brochard (author of droid48 for Android) and of course Eddie C. Dost (author of x48 for UNIX). If you came from Windows, and like Emu48 (written by Sebastien Carlier and Christoph Gießelink), you can also get Emu48 for Android (written by Regis Cosnier)

Droid48sx CHANGELOG
===================

https://play.google.com/store/apps/details?id=org.czo.droid48sx
sources on https://github.com/czodroid/droid48sx where you can get the old apk

* 18 Oct 2019 (Version 1.42)
- Bug fixes and performance improvements
- Intended to work from Android 2.2 to 10 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- New skin, A..F are the same size of others key
- Portrait mode only
- New round icon
- New name : 48sx

* 30 Jan 2016 (Version 1.39)
- Intended to work from android 2.2 to 6.x on armeabi, armeabi-v7a, arm64-v8a, mips, mips64, x86 and x86_64 architectures
- New amazing skin, should be more readable on big screens
- New action bar with icons and menu when touching HP48sx screen
- New icon
- Complete fullscreen for android 4.4, 5.x and 6.x
- Corrected port2 settings
- Haptic feedback disabled by default, but can be re-enabled

* 26 Jan 2014 (Version 1.38)
- Corrected "put program on stack" bug
- Corrected FC bug on android 4.3
- Corrected random freeze on android 4.4
- Data files are now stored on /sdcard/Android/data/org.czo.droid48sx/files
- Menu is displayed when touching HP screen
- New menu : Save checkpoint (saves a backup copy of hp48/ram/rom/port1/port2)
- New menu : Restore checkpoint (restores the backup copy of hp48/ram/rom/port1/port2)
- New menu : Full reset (deletes firmware/ram and deactivate ports, if calc is still hung, please uninstall/reinstall)

* 7 Nov 2012 (Version 1.36)
- first release

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After 30 "dry" years in IT I'm doing a bit of woodworking. That's just what I need when doing some spontaneous trig stuff. RPN is a fast, no-fuss way of doing calculations. Love it!

Volker Hetzer

I no longer need all the fancy features of a calculator like this, but since using an HP28s calculator back in the day during my college engineering classes, I really have loved the feature of working with R...

Roger Baker

Flawless perfection. This app feels like perfect code that does nothing but what is supposed to do. Thank you.

James M

To bring a toolbar menu up touch the screen. To dismiss it touch the screen again, The garbage can icon to the far left is Full reset. It wipes the calculator but not the checkpoint. The circular icon to the...

Bjorn Halstrom

I baught this calculator in the early 90s, paid nearly $400us, and now it's a free app, can't beat that. Absolutely best hp48sx emulator.

Craig Lewis

The best RPN calculator app I have used. Works flawlessly just like my old HP-48. No ads (thank you!) Just an excellent calculator.

Paterick Cutts

About 48sx : a vintage RPN calculator

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droid48sx is an emulator of the HP48sx, a vintage RPN calculator.