A hinge is mounted between a base and a screen of an electrical device and has a base panel, a guiding panel and a connecting member. The base panel is attached to the base and has a front surface. The guiding panel is mounted slidably on the front surface of the base panel and has a front surface and an arced slot. The connecting member is mounted slidably on the front surface of the guiding panel, is mounted securely on the screen panel and slides along the arced slot when in operation to allow users to slide and rotate the screen relative to the base.