It Selectric

IBM Selectric I

“The IBM Selectric typewriter was a highly successful line of electric typewriters introduced by IBM on 31 July 1961. […] Selectrics and their descendants eventually captured 75 percent of the United States market for electric typewriters used in business. […] Notable Selectric users from the world of literature include Isaac Asimov, Hunter S. Thompson, David Sedaris, P. J. O’Rourke, Stephen J. Cannell, and Philip K. Dick.”

Wikipedia