?? ???? ??? ????????? ????? ????? ?????? ??????? ??? ?? ????? ??. ?????? ?????? ???? ???? ???? ?? ???????? ????????? ??????.Analog electronic computer systems had been important for solving problems with continual variables until digital processing advanced.????? ??? ????????? ???????? ?? ???? ????? ??????? ?????? ??????? ??????? ?????? ???? ??????