1962Nick Holonyak Jr. invents the red LED; yellow, orange and green LEDs follow in the following two decades March 4, 2021/by korrusAdmin https://www.korrus.com/wp-content/uploads/2021/05/Korrus-Logo-2.png 0 0 korrusAdmin https://www.korrus.com/wp-content/uploads/2021/05/Korrus-Logo-2.png korrusAdmin2021-03-04 14:40:402021-03-04 14:40:401962
