Portable electronic apparatus having a flat box shaped housing

A portable electronic apparatus, comprising:

• a main unit having a top wall, a left side wall and a right side wall;
• a keyboard arranged on the top wall and having a plurality of key tops;
• and
• a display unit supported on the main unit and having a display housing that is configured to be rotated from a closed position to an opened position, and vice versa, to cover the top wall when in the closed position and to stand upright and expose the top wall when in the opened position,
• wherein the main unit has a plurality of stepped parts at a peripheral edge of the top wall, the stepped parts lie at a level lower than the key tops of the keyboard and are connected to the left side wall and the right side wall, and the display housing has a plurality of extensions that cover the stepped parts when in the closed position.

A portable electronic apparatus, comprising:

• a first housing having a top wall;
• and
• a second housing coupled to the first housing and configured to be rotated from a closed position to an opened position, and vice versa, to cover the top wall when in the closed position and to stand upright and expose the top wall when in the opened position,
• wherein the first housing has a plurality of stepped parts along a slope at a peripheral edge of the top wall, the stepped parts lie at a level lower than the top wall, and the second housing has a plurality of extensions that cover the stepped parts in correspondence to the slope when in the closed position.