Problem

(Word Problem) Consider a variation on the calendar combinational subsystem that works as...

(Word Problem) Consider a variation on the calendar combinational subsystem that works as follows. Given the inputs MONTH (1–12), DAY (1–31), and LEAP_YEAR flag, the subsystem generates the output DAY_OF_YEAR (1–365 or 366). In this problem, you will design the subsystem to the block- diagram level only.

(a) One block maps the month into a day offset into the year. Identify the inputs and outputs and their bit widths. Use any formal specification method you wish (e.g., truth tables, ROM contents, equations, hardware description language, etc.) to describe the function of this block.


(b) You may assume any width binary adder you may require. Indicate how the adder is composed with the block of part (a) and any other blocks or inputs to compute the correct output. Be sure to describe how you deal with the LEAP_YEAR input


(c) How many 4-input lookup tables will be needed to implement your design?

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Solutions For Problems in Chapter 5