Flip-flops and latches are used as data storage elements. A flip-flop stores a single bit (binary digit) of data; one of its two states represents a one and the other represents a zero. Such data storage can be used for storage of state, and such a circuit is described as sequential logic.
1 Incisional hernia can occur through a scar if you have had abdominal surgery in the past. 2  Umbilical hernia is a bulge around the belly button. 3  It occurs when the muscle around the belly button does not close completely after birth.
A hernia is a bulge caused by tissue pushing through the wall of muscle that's holding it in. Most hernias are abdominal hernias. This means they happen in the belly and groin areas. You may have a hernia if you can feel a soft lump in your belly or groin or in a scar where you had surgery in the past.