Abstract: An apparatus for detecting the stop of a magnetic tape traveling in a magnetic recording and reproducing device which carries out a plurality of functional modes and in which the magnetic tape travels at a speed corresponding to a selected functional mode, wherein a pulse generator produces one pulse per rotation of a magnetic tape-driving section. A time interval between the respective pulses issued from said pulse generator is determined from a number of reference pulses having a reference frequency which are delivered from a reference pulse generator and are later counted by a counter. A longer traveling time of a magnetic tape than that specified for the different functional modes is preset in a numeral code generator in the form of a numeral code. When the traveling time of a magnetic tape is found to be longer than that present for a selected functional mode, a detection signal based on an output count from the counter is issued to judge whether the magnetic tape has ceased to run.

Abstract: A programmable calculator with a device for controlling the reading of program data comprises an input section including at least one key for designating program data, a memory section for storing the program data, a program data reading section for reading the program data from the memory section, and a display section for displaying the program data. The apparatus further comprises a detecting section for detecting that the key has been depressed for a time longer than a predetermined one. When the detecting section produces an output signal, the program data reading section is so controlled as to continuously read the program data from the memory section.

Abstract: In a music tone generating system, of entry data keyed in by a plurality of entry keys related to the music tones, the entry data falling within the maximum digits which can be displayed by a display device are displayed by setting up one mode selected. When an entry key is operated to enter entry data exceeding the maximum digits while the former entry data remains displayed, the music tone corresponding to the key depressed may also be generated.

Abstract: A power consumption control system for electronic digital data processing devices is provided with a counter circuit to update a time count operation and to count a given time every time any one of the keys in the key input section is depressed. When none of the keys in the key input section is depressed before the counter circuit finishes the count of the given time, the oscillation operation of the oscillator circuit which supplies the clock pulse to the data processing device is stopped.

Abstract: An electronic musical instrument, which enables a player easily to select by operating a switch any of a plural number of tone colors from a large number of tone colors originally preset in the musical instrument in a form of tone color data stored in a memory unit, to thereby more easily carry out a performance within a broadened range of performance techniques.

Abstract: In a key button structure for electronic devices, a metal plate has one or more sharp-tipped projections extending from the surface thereof. The one or more projections of the metal plate are impaled into the key button body which is made of metal, from the bottom surface of the key button body of which the area is narrower than the surface area of the metal plate, thereby to intimately couple the key button body with the metal plate. When those ports are coupled, a part of the metal plate serves as a collar.

Abstract: A calendar data display controller may display the calendar of a desired month with various calendar data in a calendar display section which is provided in a display unit, together with a numerical data display section for displaying numerical data.The calendar is displayed in a given format in a manner that, in accordance with an instruction given by depressing a CAL key provided on a keyboard for instructing a calendar display, data is prepared representing specific calendar data such as data representing the date corresponding to a specific day (for example, Sunday) of the week and/or a holiday, a day set by an operator, today, and the day as a result of date calculation, and the prepared data is sent out to a display drive unit.

Abstract: An electronic timepiece circuit is provided with an oscillator for producing a reference signal and a frequency dividing circuit which frequency-divides the reference signal from the oscillator to produce a signal with given time intervals. Clock data stored in the memory is read out therefrom by a timing signal corresponding to the output signal from a given stage of the frequency dividing circuit and is loaded into a shift register where it is stored temporarily. The clock data stored in the memory is read out therefrom at given time intervals by a control signal obtained in accordance with the output signal from a given stage of the frequency dividing circuit, and the read out clock data, together with the clock data read out to the shift register, is subjected to a given operation, with the result that the clock data is updated. The updated clock signal is loaded into the memory by a control circuit.

Abstract: A tape recorder, wherein a plurality of magnets are mounted on the peripheral surface of a rotary disc supported on a magnetic tape takeup (feed) reel in order to measure the travelling distance of a magnetic tape; and when said magnets are brought to rest in such position as causes a lead switch to be operated at the cutoff of a main power source, then a transistor connected to one end of the lead switch is rendered nonconducting by its base resistor, thereby interrupting the input circuit of a counter-display section.

Abstract: An electronic cash register includes a keyboard having data input keys and a registration complete key, and a memory into which input data is stored by operating the data input keys. The input data of the memory is read out by a central processing unit and printed onto a sheet in a printing section. The cash register further includes a flag memory for storing a flag and a time keeping circuit into which present time data is set, the above-mentioned flag indicating a time period elapsing from an operation of the registration complete key to the start of a next registration operation. When the flag of the flag memory does not indicate the above-mentioned time period, i.e. a registering operation is being effected, an operation other than the registering operation, such as a present time display operation or an alarm operation, is inhibited. When the flag of the flag memory indicates the above-mentioned time period, a present time display operation or an alarm operation is permitted.

Abstract: A time data processing apparatus comprises a time-keeping memory for storing time data, a time-keeping circuit for renewing the time data read out from the time-keeping memory and writing the renewed time data into the time-keeping memory, repeatedly at predetermined regular intervals, and a central processing unit being accessible to the time data in the time-keeping memory while the time-keeping circuit does not make the time-keeping memory accessed.

Abstract: A calendar display apparatus comprising a calendar display panel device indicating the 1st to 31st days constituting at least one month which are arranged in a plurality of rows and columns in conformity to the serial order of the seven days of the week, wherein the calendar display panel device is supplied according to a referential clock pulse signal with at least "day" data and "month" data. A column data producing device is provided for specifying that column of the calendar on which there falls a particular day of the week in the month indicated by the "month" data. A column-specifying device receives column data delivered from the column data producing device for designating that column of the calendar in which there falls a particular day of the week. A "month"-shifting instruction generating device shifts month data forward or backward, and a data-shifting device varies the "month" data and also changes the column data supplied to the column-specifying device from the column data producing device.

Abstract: A data-recording device wherein a plurality of tracks are concentrically provided on the recording surface of a rotatable magnetic recording medium. A plurality of sector-starting positions are arranged on the respective tracks at a given circumferential interval to detect the extent to which the magnetic recording medium has been rotated, and one sector-starting position among the sector-starting positions of the respective tracks is used as a point at which the writing or reading of data is to be commenced.

Abstract: An electronic display device has numerals 1 to 31 for days of one month arranged in plural columns and rows, and numerals for displaying time such as "hours", "minutes" and "seconds" and including a plurality of segments. At least a part of the numerals for data display are disposed in the spaces defined by the segments for the numerals for time display. The device is useful for devices with restricted display space.

Abstract: A coin-delivering device which comprises a plurality of coin holders equiangularly arranged in a circumferential direction respectively to hold coins of different denominations and a plurality of coin receptacles similarly equiangularly arranged in a circumferential direction set below the coin outlets of the respective coin holder at a prescribed spacing, and wherein a coin placed on the coin receptacle is flipped out by an arm rotated by a rotary shaft, and the coin is or is not delivered as a function of the coin-flipping arm being selectively moved upward or downward by a control signal.

Abstract: A time counting control system comprises: a timing signal generator for generating at least a read-in clock signal on the basis of a reference clock signal outputted from a reference clock signal oscillator; a microprogram control unit including an address register which is controlled by the read-in clock signal outputted from the timing signal generator, an address section which decodes the contents of the address register and energizes address lines related to a plurality of processing steps, and a microprogram storing section which simultaneously outputs microprogrammed instructions and the address of the instruction to be succeedingly executed; and a count/operation unit which performs a counting operation under the control by instructions successively outputted from the microprogram storing section of the program control unit, includes an arithmetic device and a register connected to said arithmetic means to store counting information and is so controlled as to perform a counting operation each time the

Abstract: A key input apparatus is provided with a plurality of input operation keys and a time signal generating circuit which in correspondence to the number of these input keys performs a step operation to generate in turn a different timing signal. Input signals produced by actuation of the input operation keys pass through a group of first AND gates in synchronism with the corresponding timing signals generated from the timing signal generating circuit. A shift register having bits corresponding in number to the gates of the group of first AND gates receives the output signal of the AND gates via an OR gate. The output signal from the OR gate is applied to one input terminal of a second AND gate of which the other input terminal is coupled with the last bit position of the shift register through an inverter. The outputting operation of the second AND gate is controlled by the shift register and inverter.

Abstract: An electronic apparatus provided with a device for figuring out a change amount and for automatically dispensing coins as part of said change, which further comprises a system of displaying to a customer an amount of that remainder of said change which is paid back to him in paper money.