A semiconductor flip-flop device comprising: a first transistor; a second transistor; a third transistor; a fourth transistor; a fifth transistor; a sixth transistor; a seventh transistor; an eighth transistor; a ninth transistor; and a tenth transistor, wherein one of a source and a drain of the first transistor is directly connected to a first wiring, wherein the other of the source and the drain of the first transistor is directly connected to a second wiring, wherein one of a source and a drain of the second transistor is directly connected to a gate of the first transistor, wherein a gate of the second transistor is directly connected to a third wiring, wherein one of a source and a drain of the third transistor is directly connected to a fourth wiring, wherein the other of the source and the drain of the third transistor is directly connected to the gate of the first transistor, wherein one of a source and a drain of the fourth transistor is directly connected to the fourth wiring, wherein the other of the source and the drain of the fourth transistor is directly connected to the gate of the first transistor, wherein a gate of the fourth transistor is directly connected to a fifth wiring, wherein one of a source and a drain of the fifth transistor is directly connected to the fourth wiring, wherein the other of the source and the drain of the fifth transistor is directly connected to a gate of the third transistor, wherein a gate of the fifth transistor is directly connected to the gate of the first transistor, wherein one of a source and a drain of the sixth transistor is directly connected to a sixth wiring, wherein the other of the source and the drain of the sixth transistor is directly connected to the gate of the third transistor, wherein a gate of the sixth transistor is directly connected to the sixth wiring, wherein one of a source and a drain of the seventh transistor is directly connected to the sixth wiring, wherein the other of the source and the drain of the seventh transistor is directly connected to the gate of the third transistor, wherein one of a source and a drain of the eighth transistor is directly connected to a seventh wiring, wherein the other of the source and the drain of the eighth transistor is directly connected to the gate of the third transistor, wherein one of a source and a drain of the ninth transistor is directly connected to the seventh wiring, wherein the other of the source and the drain of the ninth transistor is directly connected to the gate of the third transistor, wherein a gate of the ninth transistor is directly connected to the seventh wiring, wherein one of a source and a drain of the tenth transistor is directly connected to the fourth wiring, and wherein the other of the source and the drain of the tenth transistor is directly connected to the second wiring. a first transistor; a second transistor; a third transistor; a fourth transistor; a fifth transistor; a sixth transistor; a seventh transistor; an eighth transistor; a ninth transistor; and a tenth transistor, wherein one of a source and a drain of the first transistor is directly connected to a first wiring, wherein the other of the source and the drain of the first transistor is directly connected to a second wiring, wherein one of a source and a drain of the second transistor is directly connected to a gate of the first transistor, wherein a gate of the second transistor is directly connected to a third wiring, wherein one of a source and a drain of the third transistor is directly connected to a fourth wiring, wherein the other of the source and the drain of the third transistor is directly connected to the gate of the first transistor, wherein one of a source and a drain of the fourth transistor is directly connected to the fourth wiring, wherein the other of the source and the drain of the fourth transistor is directly connected to the gate of the first transistor, wherein a gate of the fourth transistor is directly connected to a fifth wiring, wherein one of a source and a drain of the fifth transistor is directly connected to the fourth wiring, wherein the other of the source and the drain of the fifth transistor is directly connected to a gate of the third transistor, wherein a gate of the fifth transistor is directly connected to the gate of the first transistor, wherein one of a source and a drain of the sixth transistor is directly connected to a sixth wiring, wherein the other of the source and the drain of the sixth transistor is directly connected to the gate of the third transistor, wherein a gate of the sixth transistor is directly connected to the sixth wiring, wherein one of a source and a drain of the seventh transistor is directly connected to the sixth wiring, wherein the other of the source and the drain of the seventh transistor is directly connected to the gate of the third transistor, wherein one of a source and a drain of the eighth transistor is directly connected to a seventh wiring, wherein the other of the source and the drain of the eighth transistor is directly connected to the gate of the third transistor, wherein one of a source and a drain of the ninth transistor is directly connected to the seventh wiring, wherein the other of the source and the drain of the ninth transistor is directly connected to the gate of the third transistor, wherein a gate of the ninth transistor is directly connected to the seventh wiring, wherein one of a source and a drain of the tenth transistor is directly connected to the fourth wiring, and wherein the other of the source and the drain of the tenth transistor is directly connected to the second wiring.