Abstract: An optical system according to an embodiment includes first to third lenses disposed along an optical axis from an object side to a sensor side direction, wherein the first lens has a meniscus shape convex toward the object side, and satisfies 1.7?nt_1?2.3 and TTL?6 mm. (nt_1 is the refractive index of the first lens with respect to the light of the t-line wavelength band, and TTL is the distance on the optical axis from the object-side surface of the first lens to the upper surface of the image sensor.

Abstract: A semiconductor memory device includes a memory cell array, a peripheral circuit, and a control logic. The memory cell array includes a plurality of planes. The peripheral circuit is configured to perform a plane interleaving operation for the plurality of planes. The control logic controls the peripheral circuit to reset an operation of at least one plane of the plurality of planes based on a type of an operation reset command received by the control logic.

Abstract: Provided herein may be a semiconductor memory device, a controller, and a storage device having the same. The storage device may include a semiconductor memory device and a controller. The semiconductor memory device includes a first physical page that is coupled to a first word line and a second physical page that is coupled to a second word line. The controller controls a read operation of the semiconductor memory device. Identical data is stored in each of the first physical page and in the second physical page. The semiconductor memory device reads the data by randomly selecting any one of the first physical page and the second physical page.

Abstract: A semiconductor memory device includes a memory cell array, a peripheral circuit, and a control logic. The memory cell array includes a plurality of planes. The peripheral circuit is configured to perform a plane interleaving operation for the plurality of planes. The control logic controls the peripheral circuit to reset an operation of at least one plane of the plurality of planes based on a type of an operation reset command received by the control logic.

Abstract: A processing apparatus for a stator bar of a generator according to an embodiment of the present disclosure may allow a worker to safely and easily perform welding on both ends of a plurality of stator bars to be installed in the generator, thereby improving workability.

Abstract: A processing apparatus for a stator bar of a generator according to an embodiment of the present disclosure may allow a worker to safely and easily perform welding on both ends of a plurality of stator bars to be installed in the generator, thereby improving workability.