??????? ??????? ????????? ??? ?? ????? ??????? ??????? ???? ??????? ??? ?? ????? ?? ??????? ???????.????? ?????? : ?????? ??? ???? ??????? ??? ?????? ???? ????? ???? ??? ??? ??? ??????The early progress of electronics was fast, and via the nineteen twenties, industrial radio broadcasting and telecommunications had been becoming common and electroni