Abstract: A device for inputting commands includes a casing, a rotatable disk, and a processor. The rotatable disk can rotate relative to the casing, and has a plurality of input modes. The rotatable disk includes a switch button for switching among the input modes. The rotatable disk further includes a pointer. The casing includes an annular area surrounding the rotatable disk. The annular area has a plurality of input positions. The input positions correspond to characters of one character set corresponding to the current input mode. The processor is received in the casing, and can generate a command or control signal according to a character corresponding to an input position when the pointer is aligned with the input position.

Abstract: A semiconductor packaging method includes providing a substrate having a plurality of connection pads; mounting a chip on the substrate, wherein the chip comprises a plurality of copper-containing bumps directly coupled to the connection pads, and each of the copper-containing bumps comprises a ring surface; forming an anti-dissociation gel between the substrate and the chip, wherein the anti-dissociation gel comprises a plurality of anti-dissociation substances, and the ring surfaces of the copper-containing bumps are covered by the anti-dissociation substances.