Abstract: This portable electronic device includes a body section and an IC card accessing part provided in the body section. The body section has an IC card insertion slot; an elastic wiper is provided in the IC card insertion slot to make contact with a contact part of an IC card when the IC card is inserted into the IC card accessing part through the IC card insertion slot and a surface of the IC card is guided by a side of the IC card insertion slot. In this way, water and the like can be wiped off of the contact part, via IC card slot wherein an elastic wiper extends downwardly from the upper first side of the IC card slot (i.e., the elastic wiper extends a part way across a portion of the IC card slot, but an embossed part of the IC card is not caught in the slot. The portable electronic device also includes a hand hold band which is attached to be removable when desired, but not by accident.

Abstract: An upper thermo-sensitive paper is coated with an adhesive agent on a part of the rear surface thereof, and a lower thermo-sensitive paper is coated with a release agent on the upper surface thereof at the area corresponding to the adhesive agent coated area of said upper thermo-sensitive paper. The upper thermo-sensitive paper is laid on and adhered to the lower thermo-sensitive paper. By separating the upper thermo-sensitive paper from the lower thermo-sensitive paper at the boundary plane between the adhesive agent layer and the release agent layer, the upper thermo-sensitive paper can be used as a tack paper and the lower thermo-sensitive paper can be used as a copying paper.

Abstract: A battery case has a storage space formed for selectively accommodating a battery pack or a plurality of primary batteries so that the batteries can be selectively used as a power source by employing minus and plus external terminals respectively connected to minus and plus terminals corresponding to the batteries. In addition, since the minus and plus external terminals are disposed at the same positions as those of the minus and plus external terminals provided on a storage battery case, the battery case of the invention can be selectively used.

Abstract: The portable terminal keyboard includes silicone rubber mixed with phosphorescent material used on the external exposed surface of the keyboard and conventional silicone rubber used for the moving parts, so that it is luminous for a certain duration by being irradiated for a while with a light source, thereby facilitating the user's entry operation and also enhancing the durability of the keyboard. The keyboard has its key mat made of a magnetic material so that it is attached by magnetism to the main frane, thereby faciliting replacement with a different key mat. The magnetic key mat structure allows the single access attachment and eliminates such conventional fixtures as lugs, whereby the key mat can be replaced more easily even in darkness and the lugs or the like are not present to be damaged as would be otherwise caused by frequent key mat replacement.