?????????????? —— ???????????????????????? ????Computer system? ????Computer system? ????pc ?????? ????app i4?? ?????? ??????????? ???? ?????? ?????? ????????? ?????? ??????????? ????iphone??? ?????? ?????? ?????? ????Computer ??????? ???????? ???????? ????app ??????? ?????? ???????? ?????? ???????? ?????? ?????? ?????? ???? ???????? ???????? ?