ENIAC-changing a tube

Changing a tube on ENIAC.

Changing a tube on ENIAC.

"U.S. Army Photo", from M. Weik, "The ENIAC Story" A technician changes a tube. Caption reads "Replacing a bad tube meant checking among ENIAC's 19,000 possibilities." Center: Possibly John Holberton. Image ENIAC-changing_a_tube.jpg available on Wikimedia Commons as Public Domain.


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