This is a little think I created and found in the new Snapshot. The map itself shows the small, basic T-Flip Flop, along with more advanced concepts, culminating with a Combonation Lock door built with it that is modular and awesome!

All the redstone is labeled and color coded for ease of understanding!

Enjoy it! I made a video explaining more, which will be available below.

Additional Notes

Made in Snapshot 13W07A, if it is requested, I will update this map with 1.5 for Compatibility issues.