In the computer system, a storage system provides a storage level virtual volume based on thin provisioning technology, to a physical server on which a virtual machine is defined. A divisional point of the frame is a point which allows each of the latter sub-frame and the former sub-frame to minimize a difference between an actual brightness and an expected brightness. The frame assembly includes a left frame rail and a right frame rail spaced laterally from one another and extending between the handle bar assembly and the seat assembly. A light emitting member is formed over the resin film. The tilt rods are moved up and down, thereby changing the attitude of the blades, a crank shaft converts the linear motion of the thrust rods into rotational motion, and a generator converts the rotational motion into electrical power.