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| The very clear designed keyboard. Note the squareroot key; the algorithm used is based on Toepler's method (read this original Friden document from here. The calculator uses the RPN (Reverse Polish Notation) system. | |
| Total images: 14 | Help | |
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| The very clear designed keyboard. Note the squareroot key; the algorithm used is based on Toepler's method (read this original Friden document from here. The calculator uses the RPN (Reverse Polish Notation) system. | |
| Total images: 14 | Help | |