> 16 molecules, each can have 1 of 4 states, 4^16 ~ 4.3E9 > I guess this would be a 16 bit wide quadnary register in > some future > nano computer? Almost certainly a quandry register! Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist