Abstract: Disclosed herein is a portable touch-type keyboard in which touch type electrodes are included in a printed circuit board (PCB) and keys each having a pad shape are formed on a flat plate in correspondence with the touch type electrodes so as to transmit/receive a signal to/from an external device via wired/wireless communication such that key data indicating a character or a function can be input. The portable keyboard includes a pad key touch panel including a plurality of pad type touch electrodes contained in predetermined containing spaces of a printed circuit board (PCB) and pad keys formed on an upper plane in correspondence with the touch electrodes, and a signal operation module which processes signals received from the plurality of pad keys, generates a key signal, and transmits the key input signal to an external device via wired/wireless communication.

Abstract: The present invention relates to a polypropylene nanocomposite comprising (a) about 1 wt % to about 40 wt % of an acid- or acid anhydride-modified polypropylene; (b) about 0.1 wt % to about 50 wt % of an organically modified layered silicate; and (c) about 30 wt % to about 90 wt % of a nonpolar polypropylene, wherein the acid- or anhydride-modified polypropylene has a molecular weight that is lower than that of the nonpolar polypropylene, and wherein the polypropylene nanocomposite has a linear thermal expansion coefficient ranging from about 4×10?5/° C. to about 9×10?5/° C. The density and linear thermal expansion coefficient of these nanocomposites are, respectively, 10% to 20% and 20% to 40% less than conventional polypropylene composites and can be used to form durable molded products with superior dimensional stability, good tensile strength, good moldability, and high thermal resistance.

Abstract: A computer having a main casing to accommodate a plurality of hardware components such as a CPU, comprises a heat dissipating assembly which is disposed on the CPU, and includes a heat transmitter formed with a through hole, and a plurality of heat dissipating fins standing on the heat transmitter so as to dissipate heat generated by the CPU; a supporter installed in the heat dissipating fins, being disposed perpendicularly to the heat dissipating fins; a push member including a lever pivoted on the supporter, a push rod connected to the lever and passing through the through hole, the push rod moving to pass through the through hole in a direction that the heat transmitter separates from the CPU when the lever is pushed up pivoting on the supporter.

Abstract: A computer having a main casing to accommodate a plurality of hardware components such as a CPU, comprises a heat dissipating assembly which is disposed on the CPU, and includes a heat transmitter formed with a through hole, and a plurality of heat dissipating fins standing on the heat transmitter so as to dissipate heat generated by the CPU; a supporter installed in the heat dissipating fins, being disposed perpendicularly to the heat dissipating fins; a push member including a lever pivoted on the supporter, a push rod connected to the lever and passing through the through hole, the push rod moving to pass through the through hole in a direction that the heat transmitter separates from the CPU when the lever is pushed up pivoting on the supporter.