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???? ?? ??? ??? ??? 5:5 ??? ?? ??? ????. 1973??? ??? ??? ???? ??? ????? ?? ???, ??, ???, ???? ? 120? ??? ???? ??.
???? ‘??? ??’??? ??? ???? ‘?????’ ?? ?? ??? ?? ??? ?? ??. 2003??? ?????? ???? ‘?? ????’? ???? ???? ??.
???? ????? ?? ?? ??????? ??? ? ??? ???? ??. ??? ?? ? ?????? ????? ????, ?? ???? ?? ???? ????? ???? ??? ??? ??(PLC) ??? ???? ?? ? ??? ?? ?????? ? ??? ? ??? ???? ??? ??? ??? ????.
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