1. Write a Verilog code module to implement one-bit full adder. Write
another module to implement eight-bit ripple carry adder that instantiates
eight one-bit full adders and connects them properly. Now, add a test
bench to test the eight-bit ripple carry adder.
Write a test bench to test the eight-bit adder. Make sure to display your
inputs, sum, and carry out. Your test bench must have fifteen different
inputs. Put five-time unit delay between consecutive inputs. Place one
module in one Verilog file i.e., you will have three Verilog files.
2. Write a Verilog code to implement an eight-bit comparator using eight
one-bit comparators. Follow the similar nomenclature as discussed in
question 1. Your test bench must have fifteen different inputs. Put
five-time unit delay between consecutive inputs. Place one module in one
Verilog file i.e., you will have three Verilog files.
3. Write a Verilog code to implement a two-to-four decoder. Then a top
module for three-to-eight decoder using two-to-four decoder. Write a test
bench to test three-to eight decoder for all possible input with five-time
delay.
4. write a Verilog code to implement an 8-to-3 priority encoder where
priority is given to the least significant input position with a 1. For
example, if the input is 11000000, the output would be 110 encoding the
position of the least significant 1 in the input (leftmost bit is the most
significant bit). Write a test bench to test encoder for at least five
test cases. Put five-time unit delay between consecutive inputs.
