A.Explain in detail the different categories of number system conversions. B. How is binary number converted into its decimal equivalent? C. What is the hexadecimal representation of octal number...

A.Explain in detail the different categories of number system conversions. B. How is binary number converted into its decimal equivalent? C. What is the hexadecimal representation of octal number 6235? D. What is the binary equivalent of 859.238? E. What do you understand by computer arithmetic? Are the rules for performing computer arithmetic and decimal arithmetic same?