You need help with the following question
1.) If each of these 4 bit adders takes 10 nsec and there is a 1 nsec delay between adders, how long will it take two get the result from the 8-bit adder described in question 2?
Here is the second question
2.) If a particular 4-bit adder contains 20 gates, then how many gates would be required for an 8-bit adder if it utilized these 4 bit adders in a carry select adder configuration?