Philo T. Farnsworth demonstrated the first television for potential investors by broadcasting the image of a dollar sign, 1927.
Take the time to wander around the Letterman Digital Arts Center and Lucasfilms headquarters for a whimsical and historical side of the Presidio. This is the statue of Statue of Philo Farnsworth, one of the primary inventors of television.
American inventor Philo Farnsworth built an electric motor at age 12. He was still a teenager when he designed the first all-electronic TV in the early 1920s. He went on to design many other things, including the basics of radar and an infrared telescope.
Read "The Boy Who Invented Television". It is one of my favorite books! It was Philo T. Farnsworth! Mormon boy, too!
The Boy Who Invented TV: The Story of Philo Farnsworth