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لايك وسابسكريب علشان القناة تكبر واعمل شير لو شايف أن الفيديو مفيد شكراً ❤️

المصادر: -

https://www.sony.net/Fun/design/history/1950.html

https://westegg.com/inflation/infl.cgi

https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/development-tape-recorder

https://en.wikipedia.org/wiki/Tape_recorder

https://www.computerhistory.org/siliconengine/bell-labs-licenses-transistor-technology/

https://en.wikipedia.org/wiki/History_of_the_transistor

https://en.wikipedia.org/wiki/Regency_TR-1

https://en.wikipedia.org/wiki/TR-55

https://en.wikipedia.org/wiki/Sony_Life

https://pinprogram.com/editorial/the-rise-and-fall-of-sony/

https://www.extremetech.com/computing/110543-the-rise-and-fall-of-the-sony-empire

https://qz.com/1190630/sony-doesnt-want-to-compete-on-price-so-its-going-back-to-its-premium-roots/

https://en.wikipedia.org/wiki/CBS_Corporation