BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a small-sized computer apparatus having an office application UI with enhanced user intuitiveness, and more particularly to a computer apparatus which is difficult to apply a mouse and a keyboard to a portable information communication apparatus, a smart phone, a netbook, The present invention relates to a small computer apparatus having an office application UI which enhances the user's intuitiveness so that work such as an accelerator, a power point and a word can be more easily performed. A computer device according to the present invention includes an office module for arranging a menu bar of an office application UI in a similar manner to a direction indicating position of an input module, a video interface for converting a digital video signal into an analog video signal and outputting the analog video signal to a display module, And controlling the input module and the office module so that a menu of one of the menu bars can be selected by the selection of the input module, and associating the menu bar with the direction indicating position of the input module, And a control module for controlling the video interface so that a screen according to the result is output.
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