Consider a 4-bit ripple-carry adder. The delay from any input to any output of a one-bit full adder is 1 ns. After two 4-bit inputs are loaded into the adder, what is the maximum amount of time that will elapse before you have a correct output? What inputs will result in the longest wait time before a correct output is generated? What inputs result in the shortest wait time before an output is generated? Draw a schematic of the datapath for a parallel-by-serial unsigned multiplier that multiplies two 4-bit numbers and produces an 8-bit output. The multiplier should use one adder and produce an output in 4 clock cycles. Assume that the control signals are provided by an external control block. Assume that this multiplier uses the ripple-carry adder described in part a. Assume that the delay through a two-input AND gate is also 1 ns. Ignoring setup and hold times and wire delays, how fast can you clock the multiplier circuit? Assume that the adder is the slowest part of your circuit