Event of the day: On August 7th, 1955, Tokyo Telecommunications Engineering, the precursor to Sony, started selling its first transistor radios in Japan

Bell Laboratories demonstrated the first transistor on December 23, 1947.The scientific team at Bell Laboratories responsible for the solid-state amplifier included William Shockley, Walter Houser Brattain, and John Bardeen. The three scientists were jointly awarded the 1956 Nobel Prize in Physics for inventing the point-contact transistor. Bell Laboratories also patented the technology. 

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