Verilog HDL design codes for the following arithmetic circuits:

1. 4 bit Adder & Subtractor Circuit(Hierarchial modeling)

   It can perform addition and subtraction of two 4 bit binary numbers.

   https://www.edaplayground.com/x/FBii

2. 4 bit Multiplication circuit

   It can give the product of two 4 bit binary numbers.

3. 4 bit Division circuit

   It can give the quotient and remainder when division in performed between two 4 bit binary numbers.

4. 4 bit Calculator

   It can perform addition,subtraction,multiplication and division operations between two 4 bit binary numbers.

Additional:

5. 3 bit majority function(Gate level description)

   It can identify if the number of 1's in the given 3 bit binary number are more or not compared to the number of 0's in it.

   https://www.edaplayground.com/x/pn49

6. 4 bit comparator(Data flow modeling)

   It can compare any two 4 bit binary numbers and decide the less than, greater than and equal comparisions between them.

   https://www.edaplayground.com/x/Vvu4