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Two great contemporaries in New York City, both driven and stubborn, played dramatic roles in the growth of the electronics industry. They were giants in stature, although one was dedicated to science and the other to business. They were friends for over 20 years and grew inimical as older men. Sarnoff received more honors in his day, but others could not maintain the edifice he built during his leadership. Armstrong's inventions have endured and have set some basis for most of modern day analog and digital broadcasting.