Abstract: A liquid crystal composition, comprising: a first liquid crystal material comprising 20 to 70% by weight, based on the total weight of the composition, of at least one liquid crystal compound of the formula: ##STR1## wherein each of R.sup.1 and R.sup.2 is independently an alkyl group having 1 to 8 carbon atoms.a second liquid crystal material comprising at least two kinds of liquid crystal compounds selected from compounds of the formulas: ##STR2## wherein R is independently an alkyl group having 1 to 8 carbon atoms, the amounts of compounds (VII), (VIII) and (IX), based on the total weight of the composition, being up to 20% by weight, up to 20% by weight, and up to 10% by weight, respectively, anda third liquid crystal material comprising 2 to 15% by weight, based on the total weight of the composition, of one kind of liquid crystal compound selected from compounds of the formulas: ##STR3## wherein each of R.sup.1 and R.sup.2 is independently an alkyl group having 1 to 8 carbon atoms.

Abstract: A length-measuring apparatus is provided with memory for storing scale reduction data of a map and for storing unit data of length. Actual distance is calculated by calculation circuit when a rotating member is moved to roll along a point-to-point course on the map. Distance data expressed in unit corresponding to the above unit data of length is obtained. A plurality of distance data obtained by the above calculation circuit can be stored in memory together with the unit data of length and also can be displayed on display by operation of the display switch.

Abstract: An electronic stringed instrument employs a plurality of sensors or monitors for instrument performance. Preferred sensors or monitors include a detector for detecting that a string of the instrument is vibrated, an apparatus for evaluating a string-vibration strength or a string touch, an apparatus for discriminating a fret operation position on a fingerboard or a fundamental frequency of a vibration of the vibrated string, a tremolo arm sensor, and a string-bending sensor. These performance input parameters are assigned to various control functions for musical tones generated by a sound source and/or various control functions for effects added to these musical tones by an effector. The function assignment is preferably programmable. In an operation, a music control apparatus control the sound source and/or effector in response to a performance monitor so that musical tones for the strings can be distinguished from each other or effects for the musical tones can be distinguished from each other.

Abstract: An electronic still camera includes a section for converting an optical image, formed by an optical system, into electronic image signals by, and for recording the electronic image signals on a recording medium such as a magnetic disk, and a section for reproducing image data recorded on the recording medium and producing a composite video signal. The composite video signal is connected to a video terminal of a home television receiver through a cable, and reproduced and displayed on it.

Abstract: A still-image information recording/reproducing apparatus records a plurality of still-image information on a recording medium, e.g., a floppy disk, and reproduces such still-image information which has been recorded on the floppy disk. In the normal mode, each of the still images is reproduced. In the index mode, all of the still images recorded on the floppy disk are reproduced as a single still image. In particular, the still-image information recording/reproducing apparatus reproduces each of the still images read from the floppy disk during the index mode, and synthesizes all of the reduced still images with each other, so that a single still image can be produced and output therefrom.

Abstract: A plurality of sound source apparatuses are mutually connected so as to function as if they are a single sound source apparatus. The number of polyphonic channels is increased in accordance with the number of sound source apparatuses connected. In connecting these apparatuses, it is necessary to designate a polyphonic channel region in use for each sound source apparatus. The region may be set by specifying the upper and lower limits of polyphonic channels of setting a machine number of each sound source appartaus. Alternatively, the region may be automatically set.

Abstract: A tone generation control unit has four waveform read/write channels for selectively the reading or writing data in a waveform memory. A plurality of waveform signals stored in the waveform memory are converted into analog signals to be subjected to timbre and tone volume control through voltage-controlled filters and voltage-controlled amplifiers before being fed to a mixing adder. An output signal of the mixing adder is converted into a digital signal which is stored in the waveform memory again through processing of the tone generation control unit. The stored converted output from the mixing adder is later used again as a new sound source waveform which is operated on to produce tones.

Abstract: An electronic device having a calendar display function is capable of changing calendar formats to be presented on a display screen. The formats include a "Sunday through Saturday" mode and a "Monday through Sunday" mode. The device comprises a date counter which counts a date number from the first to the last days of a month. These date data are written into a display memory for the display screen and then are displayed on the display screen at appropriate locations which are different depending on which mode has been selected, in order to provide a desired calendar format.

Abstract: A manually operable sweeping-type compact printer apparatus has an input section, a display section, an electric circuit section, and a printer unit. All these components are incorporated in a housing. The printer unit includes a print head, rollers, an encoder, and a ribbon take-up device--all attached to a chassis which is fixed within the housing. When an operator holds the printer apparatus and moves it across a recording medium, while keeping the rollers and the print head in contact with the medium, the print head prints data on the recording medium.