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HP21 scientific RPN calculator
Beauty of RPN with one of the first Hewlett-Packard calculators - HP 21.
DownloadPrevious Versions
HP21 scientific RPN calculator
2.9
APK
May 8, 2019
3.78 MB
Requires Android: Android 2.1+
Screen DPI: 160-640dpi
SHA1: a89c07bd770de08bb99d0c98fd70c15dd78b20b7
Size: 3.78 MB
What's New:
Re-compiled to support Android 9
HP21 scientific RPN calculator
2.7
APK
December 14, 2016
2.28 MB
Requires Android: Android 1.6+
Screen DPI: 160dpi
SHA1: 645167c4dfd17c7afbbb2ab501d39fbffc00f898
Size: 2.28 MB
What's New:
2.7. Y^X complex result bug fixed (Error is shown for COmplex result)
2.6. touch area re-alligned to buttons properly - thank you Eric
2.5. Can enter number by EEX button directly
2.4. To improve usablity - now running in full screen
2.6. touch area re-alligned to buttons properly - thank you Eric
2.5. Can enter number by EEX button directly
2.4. To improve usablity - now running in full screen
HP21 scientific RPN calculator
2.6
APK
November 12, 2016
2.28 MB
Requires Android: Android 1.6+
Screen DPI: 160dpi
SHA1: 397b3b790da19f361f8bdcc216dd4d0824712fd6
Size: 2.28 MB
What's New:
2.6. touch area re-alligned to buttons properly - thank you Eric
2.5. Can enter number by EEX button directly
2.4. To improve usablity - now running in full screen
2.5. Can enter number by EEX button directly
2.4. To improve usablity - now running in full screen
HP21 scientific RPN calculator
2.5
APK
November 9, 2016
2.28 MB
Requires Android: Android 1.6+
Screen DPI: 160dpi
SHA1: 5152e09ed17fd82ddf4eb0c7cb5e1497311c8b30
Size: 2.28 MB
What's New:
2.5. Can enter number by EEX button directly
2.4. To improve usablity - now running in full screen
2.4. To improve usablity - now running in full screen
HP21 scientific RPN calculator
2.4
APK
March 3, 2016
2.17 MB
Requires Android: Android 1.6+
Screen DPI: 160dpi
SHA1: 75d2dffa7154476be7af64bb9f1fd88a4faff130
Size: 2.17 MB
What's New:
To improve usablity now running in full screen.
HP21 scientific RPN calculator
2.3
APK
February 12, 2016
2.15 MB
Requires Android: Android 1.6+
Screen DPI: 160dpi
SHA1: e20d8d3eff13d3474233749a2cd91f65c80140b5
Size: 2.15 MB
HP21 scientific RPN calculator
2.2
APK
January 18, 2016
2.15 MB
Requires Android: Android 1.6+
Screen DPI: 160dpi
SHA1: b37af790328bfdc8bba66bdba438661bbda0f4ed
Size: 2.15 MB
What's New:
can apply CHS on calculated result
HP21 scientific RPN calculator
2.0
APK
October 4, 2015
2.12 MB
Requires Android: Android 1.5+
Screen DPI: 160dpi
SHA1: be421c1b92b9bc910b23bb39cbb77224b149ae31
Size: 2.12 MB
What's New:
When RAD is used, display shows "RAD".
Display bug fixed.
Display bug fixed.
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