Worth Read #7

Property of gray code:
for every increment or decrement, only one bit changes, e.g; 0000, 0001.
This property of gray code makes it suitable for counters and many other sequential circuits, as this sequence involves 1-bit change, it reduces metastability, the condition in which system cant be able to decide whether a value is 1 or 0.
Metastability occurs due to set up or hold time violations in the clocked circuits, while a value of a bit changes, and, at the same time clock is sensing that data.

frenz, google with the word- gray code, metastabiity, set up time, hold time, set up and hold time violation and get clear picture of what i meant to convey, because, THIS IS VERY IMPORTANT!!!