Electrical waveform synthesizer

Claim 1

An electrical waveform synthesizer comprising: multiplex and recirculate means having a data input, a load/circulate input, and a recirculated signal input for receiving a digital input signal; a shift register connected to said multiplex and recirculate means for receipt of digital output signals therefrom and having a plurality of loadable stages for loading digital signals therein, a clock input where clock signals maybe applied to effect shifting of data between said plurality of loadable stages, and an output which is connected to said recirculated signal input of said multiplex and recirculate means; a digital-to-analog converter connected to said output of said shift register; and clock means connected to the clock input of said shift register said clock means including a plurality of frequency division circuits, each frequency division circuit further including; an input register for receiving control signals; an adder circuit connected to said input register for receipt of augend signals therefrom, an output register connected to said adder circuit to receive signals therefrom and connected to said adder circuit to provided addend signals therefor and an output connected to adder circuits of succeeding frequency circuits, if any, for providing additional addend signals therefor, the adder circuit of one of said frequency circuits having an output connected to said shift register clock input, and an oscillator having an output connected to each of said output registers of said plurality of frequency division circuits.