The December 2023 issue of IEEE Spectrum is here!

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The Rebirth of the IBM 1401 Computer

An ancient machine, rescued from a garage and refurbished, now whirrs and clicks away again, just as it did way back in 1964

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Photo: Mark Richards
FIT TO PRINT: In older systems, in which character-carrying cylinders rotated vertically, such a timing error would cause the machine to print a letter above or below the line, making the text hard to read. The tape [above] controlled the 1403’s movement. <
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