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.
Hernias can. occur close to scars from previous surgeries or in other weak areas in the. abdominal wall. The most common causes for hernias are: ï· muscle weakness due to weight gain and aging. ï· muscle strain from heavy lifting or pregnancy. ï· injury. ï· scar from a previous abdominal surgery.