Bill Hewlett and Dave Packard were two class fellows who laid the foundation of worlds renowned firm Hewlett Packard in 1939. They studied collectively in Stanford University. They introduced audio oscillator as the first solution in the firm. It was an electronic test instrument applied by sound engineers and was produced within a Palo Alto garage. The firm became popular quickly and its first consumer was Walt Disney Studios. They applied oscillators from HP to create and check an revolutionary sound system for the movie Fantasia.