one

two

three

four

OR gate

AND gate

NOR gate

XOR gate

Three point majority circuit

Three bit parity checker

Three bit comparator

Three bit counter

8 half-adders, 8 full-adders

1 half-adder, 15 full-adders

16 half-adders, 0 full-adders

4 half-adders, 12 full-adders

Rise time

Decay time

Binary level transition period

Propagation delay