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.
Once a scar forms, it is permanent but may be made less visible or relocated surgically. Different scars require different treatments. A few common scars include: 1  Burn scars. 2  Severe burns that destroy large sections of skin cause the skin to heal in a puckered way. 3  As the skin heals, muscles and tendons may be affected in this contracting movement.