V 9 8 7 July 8, 2019 16 32 64 128 V 7 8 9 ecg 787 9 v 787 8 8 3 v 9 7v 4 7v 9 v 8 Ecg v 7 8 9 7 v 9 )/ 3 8 7 - 9 V = 9 8
