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computers
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Published on Nov 19, 2015
COMPUTERS
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1.
computers
By: Paige Kellogg
Photo by
solofotones
2.
microchips
The early computers used glass containers called vacuum tubes.
These tubes controlled the electric signals.
But vacuum tubes needed a lot of electricity.
They also got very hot and broke easily.
Computers needed a better way to control the signals.
Photo by
jev55
3.
inventors/first computer
Photo by
terren in Virginia
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