To provide a personal computer storing type top board unit for a desk, etc., for educational facilities wherein an embodiment being suitable for using a note-type personal computer and an embodiment being suitable for general learning accompanied with writing, etc., can be mutually simply switched and not only the note-type personal computer but its wirings can be stored with good appearance.

A plurality of side plates 3a and 3b are arranged each other at an interval in the left and right direction of a bottom plate 4 provided with a wiring storing part 5 dented downward on the back part and a top board 14 which covers the top face between the mutually adjoining side plates 3a and 3b and is served as a writing face is mounted between the side plates so as to be sprung up back upward from a position facing forward and a placing base 18 on which the note type personal computer 17 is placed is arranged below the top board 14.