Learning binary can be painful if not taught by a good teacher. One of the most complex aspects of binary is adding binary numbers together which is known as ANDing. That is where the device below comes into play, it visually shows exactly how ANDing works.
This device is simply ingenious and needs to be standard in every CCNA classroom. My class could have been much shorter if it wasn’t for trying to teach everyone ANDing for subnetting.
