On
April 9th 2005 I designed scheme of ternary half adder (A+B=S+C):
Bill of materials (prices of 2005):
1xLM339 $0.19 - one quad comparator
2xCD4066 $0.35*2=$0.70 - two quad CMOS-switch
4x1N914 $0.022*4=$0.088 - four switch diodes
18 resistors - from $0.14 to $0.78
Totally we got from $1 to $2 for one half adder.
Functional table: