Explain in detail the concept of Gray code. Why is the 16-bit Unicode most significant among all the computer codes? Why are the number system conversions implemented in a computer system? Explain in...

Explain in detail the concept of Gray code. Why is the 16-bit Unicode most significant among all the computer codes? Why are the number system conversions implemented in a computer system? Explain in detail the different categories of number system conversions. 18. How is binary number converted into its decimal equivalent?