Abstract: System for handling and distributing of data comprising a local ordering and memorizing center connected by a common line to a plurality of peripheral user equipments, wherein said peripheral user equipments are provided each with a memory unit adapted to receive and store all the information contained in the local memorizing center, the memory unit of the peripheral user equipment being arranged so as to allow its use independently upon the operation of the ordering center, means being provided for updating the information stored in the memory equipment of the peripheral users.

Abstract: A radio-receiver or tuner provided with a solid state memory for a multiplicity of reception frequencies, comprising: a manual member for controlling a tuner having two different positions, namely manual and memory. The manual member in its "manual" condition is arranged for controlling a variable voltage generator arranged to supply a control voltage to tune variable reactances. A digital memory is provided for memorizing a plurality of signals corresponding to a plurality of reception frequencies and reception bands. The manual control member is arranged to cause the operation of a clock generator associated with a binary counter, the outputs of the counter being arranged to drive in a known way a digital-to-analog resistance network. A voltage comparator is arranged to signal the equality between the manually adjusted tuning control voltage and the voltage at the output from the resistance network.

Abstract: An electronic tuning system for radio receivers, with digital memorization of the signal frequencies. A manual control generates a first control voltage. A clock pulse generator applies pulses to a counter, the output of which is connected to a digital-to-analog converter to supply a second control voltage, indicative of the number of clock pulses counted by the counter, to electronic tuning circuitry of an electronically tuned radio receiver. A voltage comparator receives the digital-to-analog converter output and the output from the manual control. The output of the voltage comparator is applied to a gate circuit which controls application of the clock pulse signals to the counter so that these signals are discontinued when the output signal from the digital-to-analog converter is substantially equal to the output from the manual control.

Abstract: A plug-in car radio set, and support therefor comprising a support provided with means for effecting the outer connections, namely antenna, power supply, loudspeaker(s), and the inner connections associated to the radio part proper, including a casing, an indicator for the listening frequency, and the usual controls for volume and tuning, and the electronic circuitry at least at radiofrequency and intermediate frequency.