Technology 451 By ThatGuy138 Jan 1, 1970 Floppy disc is released Jan 1, 1971 VHS is invented Jan 1, 1972 Pong is ivented Jan 1, 1973 Ethernet is invented Jan 1, 1974 Post-it notes are invented Jan 1, 1975 Laser Printer is invented Jan 1, 1976 ink jet printer is invented Jan 1, 1977 Magnetic resonance imaging is invented Jan 1, 1978 The artificial heart Jarvik-7 is invented Jan 1, 1979 cell phone, walkman, and roller blades are invented