Abstract: According to the present invention a portable input terminal may be described. The input terminal may permit inputting letters in a portable terminal, letters that may be inputted more quickly than in conventional inventions because the present invention is set in a way that three different letters, numbers or symbols can be inputted by pressing one input key one time. Three letters, numbers or symbols may be inputted through one key and a plurality of sensors may be arranged effectively. The inputting accuracy significantly improves over the prior art, avoiding inputting errors by applying and developing various kinds of inputting ways using all characteristics of the present invention.

Abstract: According to the present invention a portable input terminal may be described. The input terminal may permit inputting letters in a portable terminal, letters that may be inputted more quickly than in conventional inventions because the present invention is set in a way that three different letters, numbers or symbols can be inputted by pressing one input key one time. Three letters, numbers or symbols may be inputted through one key and a plurality of sensors may be arranged effectively. The inputting accuracy significantly improves over the prior art, avoiding inputting errors by applying and developing various kinds of inputting ways using all characteristics of the present invention.

Abstract: Disclosed is a pointing device that includes a curved supporter which including a curved surface; a pointing unit placed over the curved supporter and sliding along the curved surface of the curved supporter; and a sensor sensing movement of the pointing unit, in which the movement of the pointing unit is displayed on a screen, corresponding to extent that the pointing unit slides along the curved surface of the curved supporter. With this, there is provided a pointing device that can be installed within a limited space such as a mobile device or a notebook computer requiring thin thickness and enable delicate work since it can move along the curved surface.