1930- Vannevar Busch’s Differential Analyzer is introduced as the first serious to design a computer that can do many kinds of scientific computations; it is the herald 
of the modern computer age.

1937- Claude Shannon writes an influential paper that sets the stage for digital computers linking symbolic logic and electrical circuits.

William Hewlett and David Packard found Hewlett-Packard and produce their first product, a resistance-capacitance audio oscillator that was purchased by Disney to make the sound track for the film “Fantasia.” The company would later become famous for its profitable line of desktop printers.