1920 – The first commercial radio station, 8MK, began operating in Michigan. Now, WWJ, it is owned by CBS.
http://nationalradioclub.org/articles/1stfacts.txt
1930 – W2XCR began broadcasting at 2.1-2.2 mHz from Jersey City, New Jersey, with the first demonstration of telecasts meant for the home. A half-hour program, hosted by the cartoonist Harry Hirschfeld, was viewed on screens placed in a store in the Hotel Ansonia, the Hearst building, and a home at 98 Riverside Drive.
http://www.earlytelevision.org/w2xcr.html
1970 – John Carmack was born in Shawnee Mission, Kansas. He would grow up to co-found id software and bring the world Doom, Wolfenstein and Quake.
http://www.notablebiographies.com/news/A-Ca/Carmack-John.html#b
2017 – Microsoft opened preoders for the XBox One X, a console which supported 4K video games.
https://www.theverge.com/2017/8/20/16160650/microsoft-xbox-one-x-project-scorpio-edition-preorders
Read Tom’s science fiction and other fiction books at Merritt’s Books site.