Kev txhais ntawm lub xeev ib nrab ruaj khov
Metastable xeev txhais tau hais tias tus txhais tsis tau mus txog lub xeev uas yuav cim tau raws lub sijhawm teev tseg. Thaum lub flip-flop nkag mus rau hauv lub xeev metastable, nws tsis tuaj yeem twv seb theem tsim tawm ntawm cov ntsuas, lossis nws tsis tuaj yeem twv seb lub tso zis yuav ruaj khov nyob rau theem tseeb. Lub sijhawm ruaj khov no, flip-flop tso tawm qee theem ntawm cov theem nruab nrab, lossis yuav nyob rau hauv lub xeev oscillating, thiab cov theem tsis zoo no tuaj yeem nthuav tawm hauv cascade raws txhua flip-flop ntawm cov teeb liab txoj kab.