Abstract: A disc playing and controlling apparatus which includes a plurality of magazine type disc players. When a first disc player is operating, the apparatus controls the other disk players to find and load a disc holding the next song to be played. Before searching for the next song, the controller determines whether one player is already set in a standby position or whether the next song is located in the player currently being operated. If no player has been set for the next program, the apparatus reads the next selection from a program list and identifies which magazine contains the selected program based on a data map. The map stores each player number and magazine number in an one-to-one relation with the table of contents data for each song.

Abstract: An X-ray targeting mechanism or X-ray spot film device including switching means for the organwise-programmed setting of exposure data on a command component. The switching means is constructed of a multi-position or rotary step switch. A plurality of legend-bearing or color-coded viewing frames are associated with the switch, and indicate the particular combinations of exposure data or organs related to each individual switch step position.FIELD OF THE INVENTIONThe present invention relates to an X-ray targeting mechanism or spot film device including switching means for the organwise-programmed setting of exposure data on a command component.DISCUSSION OF THE PRIOR ARTAn X-ray targeting mechanism or spot film device of this type has become known through prospectus SR 850 of Hofmann GmbH, Erlangen, West Germany.