Until 1950 this field was called "radio technology" because its principal application was the design and theory of radio transmitters, receivers and vacuum tubes.Today, most electronic devices use semiconductor components to perform electron control.. 
jẹ́  ọba ilẹ̀ Fránsì tẹ́lẹ̀.Ìtọ́kasí àwọn Ọjọ́ìbí ní àwọn ojoaláìsí ní àwọn ọba ilẹ̀ Fránsì.. 