2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 2000-1-1T10:10:10 Q0,Q1,Q2,Q3 is Qa,Qb,Qc,Qd from TTL book TC is RCO from TTL Book CET CEP same as ENT ENP from TTL Book P0 is DATA_A, P1 is DATA_B ... from TTL Book PEn is LOADn from TTL Book