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

youdao

Help and advice came from the many people who found his project blog, a journal he used to organise his thoughts about how to build the processor and incorporate that into a working computer.

他在工程博客里记录了自己关于搭建处理器并且在此基础上制作计算机的想法，许多阅读过他工程博客的人给他提供了帮助和建议。

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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