In that case...
1970's Big Inventions
Many cool inventions happened in the seventies that changed the way we live today!
The tecorder-wheel printer was designed and the floppy disk were invented by Alan Shugart.
In 1971, the dot-matrix was invented. In the same year, the food processor and the liquid-crystal display were made. Also, the VCR or videocassete recorder was invented.
In 1972, the word processor was invented. Also in 1972, Pong ( the first video game ) was invented by Nolan Bushnell, and the Hacky Sack was invented by John Stalberger and Mick Marshell.
In 1974, the first post-it note was produced by Arthur Fry.
In 1975, the laser printer was invented and the push through tab on a drink can was invented.
In 1976, the ink-jet printer was invented.
In 1979, cellular phones were invented.
LOL that's still mainly technical-English "invented", not "used" or "innovated" or popular!
The only thing mentioned here that was at all *prevalent* in the '70s was the "PONG"!
The TV was "invented" in the '30s but it did NOT become known and widespread ("innovated") until the '50s! Someone saying TV is typical of the '30s ("a '30s thing") is being absurd.
See what I mean now?
Again I apologize, but things like that just drive me nuts! They give wrong impressions to people who have absolutely no clue and need good history lessons. ;-)