3.5.

3.4. Write an entity declaration for a 4-bit magnitude comparator. Name the output port altb for "a less than b." 35. Write four architecture bodies for the entity declaration of Problem 3.4: one using an if-then-else statement, one using Boolean equations, one using a when-else statement, and one using component instantiation statements and components similar to the xnor2 and and4 components of Listing 3-5. (Hint: the