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.
The most serious type of hernia is a strangulated hernia, in which the normal blood supply is cut off from the trapped tissue. Without that blood supply, the strangulated tissue cannot get oxygen and will die. Surgery is required immediately to dislodge the tissue so that oxygen can get to it again.