A network interface terminal able to provide network service includes an intrusion shrapnel, elastic element, intrusion plate, and bolt is disclosed. The pico projector device used with a mobile phone includes: a housing; a connector, partially exposed from the housing, for connecting with the mobile phone; and a pico projector module, provided in the housing, for projecting an image under control of the mobile phone based on an image signal from the mobile phone through the first connector. A peripheral circuit region including a transistor for a peripheral circuit or the like is manufactured into a region surrounding the NOR-type flash memory region and the DINOR-type flash memory region. A beacon laser is provided for transmitting a beacon beam at a first wavelength in a beam having a first divergence. The air flow exiting from the nozzle can be directed in different planes.