??, ??? ??? ???? ???? ??? ???? ???? ??? ???? ?????? ???? ???. ??? ???? ??? ? ???? ? ? ?? ??? ??? ?? ???? ??? ??? ????? ?????. ???? ??? ???? ??? ???? ?? ??? ?????. ??? ??? ??? ???? ??? ??? ??? ???? ????? ???? ?? ?????. ??? ???? ??? ???? ?? ?? ?? ?? ??? ? ??? ??? ?? ??? ?? ??? ??? ?????. ? ??? ??? ??? ??? ? ??? ? ????. also referred to as software