Abstract: A digital semiconductor circuit for an electronic organ has a plurality of control inputs addressed via a keyboard and corresponding in number to the number of keys of the organ keyboard, and a plurality of audiofrequency signal inputs addressed with periodic electrical oscillations by an oscillator system. Each control input is associated with a respective key of the keyboard and each audiofrequency signal input is permanently assigned with a respective tone frequency of the highest octave of the organ. The control signals serve to address the control inputs by the keys of the keyboard corresponding to logical levels "1" and "0." The circuit further includes a number t of divider stages in a frequency divider at least equal to a number q of the octaves in the organ keyboard. A number u of a plurality of AND gates in a given group of AND gates is greater than the number q of the octaves in the organ keyboard.

Abstract: A monolithically integrable semiconductor circuit having an input section into which respective electrical signals which are to be evaluated and which have been provided by groups of binary pulses are serially feedable, includes a clock-controlled shift register in the input section, the shift register being operable by shift pulses from the controlling clock thereof. The shift register has a plurality of register cells corresponding in number at least to the number of binary digits of the groups of binary pulses. The semiconductor circuit also includes a logic circuit, at least two of the register cells having an output operatively connected to the logic circuit for controlling the logic circuit.

Abstract: Digital semiconductor circuit with a plurality of circuit parts selectively activatable by manual actuation of respective control switches includes a respective bistable flip-flop associated with each of the control switches, a common logic circuit disposed between the control switches and the bistable flip-flops and being connectible by n signal inputs thereof via the control switches, respectively, to a level of a logical "1", the common logic circuit having 2 n signal outputs pairwise combined, respective pairs of the signal outputs being disposed for controlling respective ones of the bistable flip-flops, each of the bistable flip-flops having a respective signal output for controlling a respective one of the circuit parts activatable by the respective control switches, the bistable flip-flops being initially in a first operating state wherein the circuit parts to be activated are in rest condition immediately subsequent to switching on of the digital semiconductor circuit, the common logic circuit having

Abstract: Semiconductor circuit for transforming sequences of periodic a-c voltage signals, including a signal input, a signal output, n pair of identical first and second transistors each having a control electrode and first and second current-carrying terminals, the first current-carrying terminal of each of the first transistors being connected to the signal input, the second current-carrying terminal of each of the first transistors and the corresponding second current-carrying terminal of each of the second transistors of each of the transistor pairs being connected together, n different combinations of resistances each being connected between a connection of the second current-carrying terminals of a transistor pair and the signal output, the combinations of resistances of each transistor pair together forming a resistance network, the first current-carrying terminal of each of the second transistors being at a common operating potential which is different from ground, and a digital counter having n counting stag

Abstract: Digital semiconductor circuit having a plurality of control inputs addressed via a keyboard corresponding to the number of keys on an organ keyboard, as well as having a plurality of audio signal inputs addressable by an oscillator arrangement with periodic electrical oscillations, each control input being permanently assigned to a key of the keyboard and each audio signal input of an audio frequency, and further having respective audio frequency outputs provided for driving an electroacoustical transducer, the control inputs being addressable by control signals corresponding to the logic levels, including a clock-controlled shift register operated as a parallel-to-series converter and having respective cells to which the respective control inputs are assigned, the shift register having a signal output, a switching system controllable by the signal output of the shift register and by clock pulses provided for the operation of the shift register, the switching system having the totality of the audio signal inp

Abstract: Monolithically integrated semiconductor memory including memory cells disposed in parallel rows and parallel columns transverse to the rows, and electric lines connecting the memory cells of the respective rows and columns to one another, the memory cells individually being constructed as clock-controlled shift register cells.

Abstract: Monolithically integrated digital semiconductor circuit formed on a semiconductor body and having MIS field-effect transistors and an electric terminal as signal input in the semiconductor body, including respective devices for applying two operating potentials to the digital semiconductor circuit, a manually actuatable sensor switch connecting the respective devices to the electric terminal for applying one of the operating potentials thereto, one of the MIS field-effect transistors having a source drain path and a control gate, the transistor being rendered conductive by an electric pulse applied to the gate thereof and the electric terminal being connected in the semiconductor body to the means for applying the other of the operating potentials thereto through the source-drain path of the transistor, an additional circuit component forming part of the digital semiconductor circuit and representing an AND function, the additional circuit component having at least one terminal connected to the electric termi

Abstract: A pulse converter for transforming periodic signals of any waveform into two output series of digital pulses such that the duty cycle of one of the series is temporarily separated from the duty cycle of the other series by non-duty cycle intervals to avoid interfering overlapping of the pulse series when employed in additional digital circuitry as clock pulses. The pulse converter can be attached to any periodic signal input, or may be provided with an input network to produce the pulse series from standard alternating current.