If you would like to play around with a circuit simulation tool here is a freeware tool by LinearTechnology to start with.
You may download the program from here.
In 2017, the film was selected for preservation in the National Film Registry by the Library of Congress, deeming it "culturally, historically, or aesthetically significant."
In 2017, the film was selected for preservation in the National Film Registry by the Library of Congress, deeming it "culturally, historically, or aesthetically significant."