Instant Comperator Carry adder

[minestyler007]

i built another adder which is 7 ticks and uses the new way for carrying

http://imgur.com/a/666Yg

some things i found:

• works best if the comparators face south (north is ok 2 but had this ripple thing for the very last comparator).
  

• the back inputs have to be powered with redstone dust that is full signal strength and that is powered by redstone torches
  

• if you power it in a different way you have to have every second comparator have less signal strength then the one before which leads to signal strength loss of 2 power per bit.