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IBM 1401 Mainframe, the Musical

JUN 29, 2007

DOI: 10.1063/PT.5.021242

Physics Today
Wired : When IBM chief maintenance engineer Jóhann Gunnarsson started tinkering with the IBM 1401 Data Processing System, believed to have been the first computer to arrive in his native Iceland in 1964, he noticed an electromagnetic leak from the machine’s memory caused a deep, cellolike hum to come from nearby AM radios.
© 2007 American Institute of Physics
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