Propagation delay for carry lookahead adder

Ald

1. The problem statement, all variables and given/known data

1) I'm using a 4 bit carry lookahead adder to build a 8 bit parallel adder. I'm to calculate the maximum propagation delay time, assuming each gate introduces a unit time of propagation delay. I'm assuming not carry lookahead generators.

Would it just be 8 units of propagation delay?

2) If I had a 16 bit adder using carry lookahead generators, what would the maximum propagation delay time, assuming each gate introduces a unit time of propagation delay.

Thanks