?? ????? ?? ????????? ?????????? ??? ??? ?????????? ??????;???? ???????????? ??????? ??? ?? ??????????? ??????? ??????? ?? ??? ????????? ??? ?? ??????? ??? ?????????????? ??? ???????????, ?????? ??? ?????????.Much more recently invented, a modem modulates an analog "provider" signal (for instance sound) to encode binary electrical digital informati