32 mA Third Question (20 marks): A) (12 marks) Trace the following logic circuits and fill-in the blanks: 1) This circuit is a output is given by equation: TIL F = XY + Z Z Y R₂ logic. Its 2) This circuit is a DTL logic. Its function is given by equation: F = AB ++ +V 加 3) This circuit is a RTL function is given by equation: F A+B Vee logic. Its 4) This circuit is a DRL Its function is given by equation: FKY (Y+Z+L) VCC A ww Z L logic. B) (5 marks) Using an Open collector TTL circuit (with internal OR'ing), design the following logic