HP21 scientific RPN calculator
9.1 14
v2.9 by Milan Cisár
關於 HP21
HP21（包名：appinventor.ai_milancisar72.HP21）開發者是Milan Cisár，HP21的最新版本2.9更新時間為2019年05月07日。HP21 scientific RPN calculator的分類是工具。您可以查看HP21 scientific RPN calculator的開發者下的所有應用並找到HP21 scientific RPN calculator在安卓上的44個相似應用。目前這個應用免費。該應用可以從APKFab或Google Play下載到Android 2.1+。APKFab.com的所有APK/XAPK文檔都是原始文檔並且100%安全下載的資源。
The HP-21 was a scientific calculator produced by Hewlett-Packard between 1975 and 1978. It was designed as a replacement for the HP-35, and was the first from so called Second Generation Handheld Calculators.
As with most HP calculators then and now, the HP-21 used RPN entry logic, with a four-level stack. It also had a single user-accessible memory register. A shift key provided access to functions whose legends were printed on the fronts of the tall trapezoidal keys.
To enhance practical usability, display was modified to show both X and Y register. Also I have eliminated mechanical DEG/RAD switch and moved the function under DSP button.
HP21 has few big enough buttons to be used comfortably on mobile devices.
As with most HP calculators then and now, the HP-21 used RPN entry logic, with a four-level stack. It also had a single user-accessible memory register. A shift key provided access to functions whose legends were printed on the fronts of the tall trapezoidal keys.
To enhance practical usability, display was modified to show both X and Y register. Also I have eliminated mechanical DEG/RAD switch and moved the function under DSP button.
HP21 has few big enough buttons to be used comfortably on mobile devices.
HP21 2.9 更新
Re-compiled to support Android 9
查看更多
HP21 資訊
歷史版本 更多
HP21 scientific RPN calculator
2.9
APK
2019年05月08日
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
2016年12月14日
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
2016年11月12日
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
2016年11月09日
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
更多資訊
更新日期:
2019-05-07
最新版本:
2.9
請求更新:
系統要求:
Android 2.1+
舉報:
HP21相似應用
更多
RealCalc Scientific Calculator
適用於 Android 的科學計算器 - 外觀和操作都像真的一樣！
9.3 18K+
Scientific Calculator
一個免費但功能強大的科學計算器。具有完整的複雜數量支持。
9.1 237
Scientific Calculator Advanced
帶有圖表的經典科學計算器。精確計算變簡單！
9.6 1K+
