device for the digital syntetisator for formation of a frekvensledverde in telekommuniktationsapparater der the nominal operating frequency is expressed as to the frequencies associated siffertal

摘要

A digital frequency synthesizer in which a BCD DIVIDED N counter is used to provide the desired frequencies of operation without requiring further BCD decoding operations to provide direct channel number interface. This is accomplished by selecting a value of (N) corresponding to a desired channel number (CN) and selecting a downmix heterodyning frequency so that the lower order bits of (N) are equal to the desired (CN) without need for further conversation.