HP21 scientific RPN calculator
開発者
Milan Cisár
パッケージ:
appinventor.ai_milancisar72.HP21
ダウンロード:
10K
サイズ:
3.78 MB
Android 要件:
2.1.x 以上
アップデート:
2019年7月1日
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.
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