Lab day (05):

In simple adders, if it's a 4-bit adder, all the individual adder circuits don't execute the addition operation simultaneously because each one of them needs to know if carry has been generated for previous one or not. This makes addition slower. To rectify this problem, Carry look ahead adders are used in which all the carry is generated at once using some carry generation and propagation functions, and the adders execute the addition operation simultaneously, thus reducing the total addition time.