Abstract: A service platform using natural language for communication includes a request module, a natural language communication system and a product/service module. The request module is provided for a user to make a request in natural language. After receiving a request from a user, the natural language communication system converts and analyzes the request to obtain an analysis result. The product/service module provides a corresponding product or service according to the analysis result.

Abstract: The invention relates to a hand-held electronic device with multi-functions comprising a casing, a display pivotally configured on the casing and capable of being rotated in different angles, a control circuit configured in the casing, an optical projecting system configured in the casing and electrically connected to the control circuit, and an optical video recording and photographing system. The casing has a plurality of operable keys. The control circuit is capable of executing functions of communication according to the operation of each of the keys, projection by driving the optical projecting system, and video recording and photographing by driving the optical video recording and photographing system. Accordingly, functions of communication, projection, video recording, and photographing can be selectively executed, so as to achieve the effect of multi-functions in one set.