因为之前电脑运转要把电路焊接起来，然后还可以对特定东西进行计算。

Before then, computers were programmed by rewiring their circuits to perform a certain calculation over and over.

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焊接电路板需要较少的工人。

Fewer workers are needed to solder circuit boards.

《柯林斯英汉双解大词典》

图中的这位工人在一块钢板表面加热一块电脑电路板以取下焊接在上面的芯片原件。

In this photo, a worker heats a computer board on a steel surface to remove the computer chips soldered into it.

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