Question: a . Write a VHDL module for a 4 - bit adder, with a carry - in and carry - out, using an overloaded addition

a. Write a VHDL module for a 4-bit adder, with a carry-in and carry-out, using an overloaded addition
operator and std_logic_vector inputs and outputs.
b. Design an 8-bit subtracter with a borrow-out, using two of the 4-bit adders you designed in (a),
along with any necessary gates or inverters. Write a VHDL module for the subtracter.
c. Simulate your code and test it using the following inputs: 11011011-01110110,01110110-
11011011
Write answers in details and explain each steps clearly with coding. Show the wave forms in image format
a . Write a VHDL module for a 4 - bit adder, with

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