Decimal to Gray Code Converter

Conversion from Decimal to Gray Code

A Decimal can be converted to Gray Code in three steps:-

1. Convert the input decimal to binary
2. Take the first bit of the binary input and write it to the output
3. Repeat the following steps until you reach the end of the input
4. Take the second bit of the input and XOR it to the previous bit of the input
5. Write this result to the output. So, 0 + 0 = 0, 0 + 1 = 1, 1 + 0 = 1 and 1 + 1 = 0.

Example Decimal to Gray Code Conversion

Let's say your Decimal value is 173 and you want to convert it to it's Gray Code form.

1. Step 1: Convert the input decimal to binary. So, 173 becomes 10101101
2. Step 2: Take the first bit of the binary input and write it to the output. Output is 1
3. Step 3: Repeat the steps below until you reach the end of the input
   • Take the second bit of the input and XOR it to the previous bit of the input. 1 + 0 = 1
   • Write the result to the output. Output: 11
   • Take the third bit of the input and XOR it to the previous bit of the input. 0 + 1 = 1
   • Write the result to the output. Output: 111
   • Take the fourth bit of the input and XOR it to the previous bit of the input. 1 + 0 = 1
   • Write the result to the output. Output: 1111
   • Take the fifth bit of the input and XOR it to the previous bit of the input. 0 + 1 = 1
   • Write the result to the output. Output: 11111
   • Take the sixth bit of the input and XOR it to the previous bit of the input. 1 + 1 = 0
   • Write the result to the output. Output: 111110
   • Take the seventh bit of the input and XOR it to the previous bit. 1 + 0 = 1
   • Write the result to the output. Output: 1111101
   • Take the eighth (last) bit of the input and XOR it to the previous bit. 0 + 1 = 1
   • Write the result to the output. Output: 11111011
4. Step 4: So, our final gray code result is: 11111011

Gray Code Table