![]() The introduction of the TR-55 marked the rebirth of the radio as a portable device. It would take over two years, but on December 23, 1947, the first transistor was demonstrated at Bell Telephone Laboratories. Tokyo Tsushin Kogyo (the original name of "Sony") was the first company in the world to make a radio using its own transistors. In 1955, the company began full-scale production and sales of Japan's first transistor radio, the TR-55. At the time, many people thought it was foolhardy to build a radio using transistor, but they overcame many obstacles and succeeded in developing Japan's first PNP alloy transistor prototype in 1954. In 1952, when Sony's founder, Masaru Ibuka learned that Western Electric was going to release its transistor patents to the public for a fee, he decided to take on the challenge of developing a radio using Sony's own transistors. ![]() The whole family would gather in the room where the radio was located to listen to the news and music programs. At long last, in December of 1947, three physicists from Bell Laboratories successfully invented the first working transistor. The first production-model pocket transistor radio was the Regency TR-1, released in October 1954. This work of art, is the first in a series of paintings by Jim deLeon originally commissioned. Replica of the first working transistor invented in 1947 by John Bardeen, Walter Brattain and William Shockley at Bell Laboratories in the United Stat. The first prototype pocket transistor radio was shown by INTERMETALL, a company founded by Herbert Matar in 1952, at the Internationale Funkausstellung Dsseldorf from August 29 to September 6, 1953. Known as TRADIC (for TRAnsistorized DIgital Computer), the machine was a mere. So, the semiconductor industry was started on December 16, 1947. At that time, radios were large and used vacuum tubes. In January of 1954, supported by the military, engineers from Bell Labs built the first computer without vacuum tubes. It was the radio that provided accessible entertainment during the chaotic post-war years.
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