A data processing apparatus comprises a processor for executing a stream of instructions, and a prefetch unit for prefetching instructions from a memory prior to sending those instructions to the processor for execution. The server then establishes a direct telnet connection with the addressee’s Mail User Agent, and transmits the tagged email to the addressee’s MUA, as well as to the MUA’s of any other addressees. At least one securing element configured for engagement with the at least one channel of the sign-holding portion of the mounting bracket is included on a back surface of the sign-holder. A processor is provided in the unitary package that is configured to control the first and second flat panel displays, in response to the user input device. Thus, reduction of vacuum exhaust time and a high vacuum degree in manufacturing an image displaying apparatus is attained and efficiency of manufacturing is improved.