Browsing: forecast

In 1979, a Sony engineer named Nobutoshi Kihara built the first Walkman prototype in four days because his boss Masaru Ibuka wanted to listen to opera on long flights, and the team launched it with no advertising budget, no headphone jack standard, and an internal forecast of 5,000 units a month that the device beat in its first fortnight.

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In February 1979, Sony co-founder Masaru Ibuka walked into the office of audio engineer Nobutoshi Kihara carrying a bulky TC-D5…