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HP21 أيقونة

HP21

scientific RPN calculator

2.9 for Android

Milan Cisár

هذا الوصف ل HP21

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.

HP21 2.9 تحديث

2019-05-08
Re-compiled to support Android 9

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Additional Information

الفئة: مجاني الأدوات تطبيقات

تاريخ النشر:

احدث اصدار: 2.9طلب HP21 تحديث

الحصول عليه على: الحصول على HP21 من Google Play

المتطلبات: Android 2.1+

تقرير: تحديد كغير مناسب

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