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.
In open surgery, the skin and fat over a hernia are opened, the hernia is located, and a small mesh is placed under the hole in the muscle. The skin is then closed over the hernia repair site. Open surgery can be used for all hernias including inguinal, umbilical, incisional, ventral, sports, and femoral.