OK, let's start by considering the point (1). Suppose we are using a binary counter in conjunction with a binary-to-Gray converter. If the binary counter currently has a value of 0101, the next count ...

An example of this mirroring process used to generate a 4-bit Gray code is shown in Fig 3. 3. Using the mirroring technique to generate a 4-bit Gray code. It is often required to convert a binary ...

The example he uses to show the importance of this is when binary code transitions from 7 (0b0111) to 8 (0b1000). Three digits have been turned off and one has been turned on.