He used a computer, but you can also calculate pi at home with some needles and a sheet of lined paper.

当然，贝拉德要求助于电脑，不过你也可以用最简单的办法在自家客厅计算圆周率，所用材料只是几根针和一张横格纸。

youdao

Before joining Linear, he taught at the Massachusetts Institute of Technology, where he used a surplus flight computer from an Intercontinental Ballistic Missile to research the control of fermentation for use in fields such as pharmaceutical production.

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He is 80 years old, visually impaired, has never used a computer nor does he expect to learn to use one.

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Then, as he likes to say, he did some math and used a computer to make a copy.

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