September 9, 2011 By Chad Vander Veen
Answer:
The first functioning integrated circuit.
Several executives, including former TI Chairman Mark Shepherd, gathered for the event on September 12, 1958. What they saw was a sliver of germanium, with protruding wires, glued to a glass slide. It was a rough device, but when Kilby pressed the switch, an unending sine curve undulated across the oscilloscope screen.
source: Texas Instruments
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