此程序没有内置的编程功能，旨在用作简单的符号数学计算器。

This program has no programming capability built in and is intended to be used as a simple symbolic math calculator.

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父亲会在他的脑子里计算这些冗长的、复杂的数字，而他的朋友们却在拼命地按着计算器，试图赶上这位数学天才的速度。

Father would calculate lengthy and complex figures in his head while his friends struggled to catch up to the math whiz with their calculators.

youdao

关于为什么计算器能如实地反映数学事实，可以进行物理解释。

You can give a physical explanation for why my calculator faithfully reproduces mathematical facts.

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