MCQ on Code Conversion

Which of the following is true about Gray code?

• Two consecutive Gray code numbers differ in all bits

• Two consecutive Gray code numbers differ in only one bit

• Gray code is the same as binary code

• Gray code cannot be converted back to binary code

What is the Gray code equivalent of binary 1010?

• 1111

• 1110

• 1010

• 1001

How is the most significant bit (MSB) of Gray code related to the binary number?

• It is always 0

• It is always 1

• It is the same as the MSB of the binary number

• It is the XOR of the first two bits of binary number

Which of the following represents the decimal number 9 in BCD?

• 1001

• 0111

• 1010

• 1100

How many bits are used to represent one decimal digit in BCD?

• 2

• 3

• 4

• 5

Convert Gray code 1101 to binary. What is the result?

• 1011

• 1001

• 1110

• 1100

The BCD code for decimal 45 is:

• 0100 0101

• 1000 0101

• 0100 1010

• 1001 0100

What is the binary equivalent of BCD 0010 0110?

• 26

• 12

• 36

• 62

Why is Gray code preferred over binary in some applications?

• It uses fewer bits

• It has fewer errors because only one bit changes between successive numbers

• It is easier to convert to decimal

• It is faster to compute

Which operation is used to convert binary to Gray code?

• AND

• OR

• XOR

• NOT