| 摘要 |
A waveform generator for generating a plurality of repetitive digital waveforms having a common repetition period which is an integral number of periods of a clock signal, the transitions of each waveform during the repetition period occurring synchronously with pulses of the clock signal comprises a digital storage device E which is preprogrammed with waveform data and with time interval data for each of the waveforms, an address counter D, an interval counter G, a latch F and a clock pulse source Y. The interval counter G is arranged to count to a predetermined count number when it is reset to a value determined by the time interval data present at the output of the storage device E and this sequence is repeated. Shortly after the predetermined count number is achieved the interval counter G supplies an address bit to the storage device E and a count signal to the address counter D so that the device E delivers the pertaining waveform data. Shortly before the predetermined count number is next achieved by the interval counter G it delivers a latch operation signal to latch F thereby transferring the available waveform data to the output thereof and this sequence is repeated.
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