Abstract: An electrical connector for connecting a daughter board to a mother board includes an insulating housing to be mounted on the mother board; a plurality of contact terminals disposed in the insulating housing; an open mouth provided in the insulating housing for receiving and allowing the daughter board to be turned toward a latch a pair of latch levers provided on opposite sides of the open mouth and having a latch portion and a sliding member at an upper portion thereof; a protective member provided on the insulation housing and spaced from the sliding member by a predetermined distance; a front surface of the latch portion being made in such a form that the daughter board can pass over the latch portions, with opposite sides thereof pushing the latch levers outwardly, when it is turned rearwardly about the edge portion; and a rear surface of the latch portion being made in such a form that it latches the daughter board to the electrical connector when the daughter board is connected to the electrical connec

Abstract: An arpeggiator scans key-pushing data and produces in sequence a plurality of playing data according to results of the scanning. The arpeggiator includes a rhythm pattern table having at least one step which stores therein a time interval of a rhythm, a sound generation continuing time and a sound generation strength coefficient. The arpeggio playing is performed according to the rhythm pattern table. The arpeggiator further includes a scan mode table having at least one step which stores one of a plurality of scan functions. The key-pushing data is scanned by sequentially referring to the stored scan function so as to produce playing data based on which the arpeggio playing is performed. The arpeggiator has a mode where the key-pushing data is erased based on key-releasing data and another mode where erasure of the key-pushing data is prohibited based on given hold data.

Abstract: An electrical connector for connecting a daughter board to a mother board, includes an insulating housing; contact terminals disposed in the insulating housing; an open mouth provided in the insulating housing for receiving the daughter board; terminal receiving slots provided in the open mouth; each of the contact terminals being made by stamping and forming a spring conductive sheet so as to have a fixing section to be fitted in the terminal receiving slot, a reverse U-shaped section extending upwardly from the fixing section and then downwardly into the open mouth to provide a lower contact point, a J-shaped section extending upwardly from the lower contact point and toward the rear wall and then upward to provide a stopper section, and a C-shaped section extending upwardly from the J-shaped section and into the open mouth to provide an upper contact point; the reverse U-shaped section, the J-shaped section, and the C-shaped section constituting a spring unit; shoulders provided on the rear wall of the ope

Abstract: An assigning device of an electronic musical instrument for selecting a musical tone-generating channel to assign a new musical tone is disclosed. The object of the invention is to minimize the sense of incongruity in a musical performance upon determining, preliminarily, the preferential order for the assignment of a new musical tone to the musical tone-generating channels.As to the musical tone-generating channels with the successive strike relation detected from among the channels being in a musical sound-generating condition, the content subject of the predetermined preferential order rule is altered. This altering is conducted so that the above-mentioned musical tone-generating channels with the successive strike relation are preferentially selected, and are assigned with new musical tones, according to the assigning order based on the predetermined preferential order rule, at least among musical tone-generating channels in the sound-generating condition.