Short answers, pulled from the story.
Hans Christian Ørsted discovered that an electric current produces a magnetic field in 1820. This observation linked electricity and magnetism for the first time.
The Technische Universität Darmstadt founded the world's first department of electrical engineering in 1882. They introduced the first-degree course in 1883.
John Bardeen and Walter Houser Brattain invented the first working point-contact transistor while working under William Shockley at Bell Telephone Laboratories in 1947. They subsequently invented the bipolar junction transistor in 1948.
Thomas Edison provided 110 volts direct current to 59 customers on Manhattan Island when the first large-scale electric power network switched on in 1882.
Konrad Zuse presented the Z3 computer in 1941 using electromechanical parts. This machine preceded the Colossus which Tommy Flowers designed and built in 1943.