NOTEBOOK TYPE PERSONAL COMPUTER AND KEYBOARD TO BE USED FOR THE SAME AND METHOD FOR USING NOTEBOOK TYPE PERSONAL COMPUTER

PROBLEM TO BE SOLVED: To make the combination of a notebook type personal computer and a keyboard satisfiable both portability and operability in an office or home by confining one notebook type personal computer and a desk top type keyboard. SOLUTION: This notebook-type personal computer 10 is provided with a personal computer main body 13 with a built-in CPU which is equipped with a keyboard 11 on the surface side and capable of using a separately placed keyboard and an opening and closing cover 16 connected through a rotatable fixing means 14 with the deep side edge part of the personal main body 13 so as to be openable and closable, and equipped with a display 15 at a position faced to the keyboard 11 on the surface side in the closed state. In this case, the maximum opening angle α of the opening and closing cover 15 is set so as to be more than 270 deg. and not more than 320 deg. from the state that the opening and closing cover 16 is closed.