= NOW 7 1/2 WPM = advertisement lists 30 such operations. Of particular interest is the fast Fourier transform function, which permits viewing the signal in the frequency domain. Further Capabilities. Because the digital oscilloscope includes memory and a processor, other features are often included. These may consist of a frequency counter and/or a frequency generator. = END OF 7 1/2 WPM TEXT = QST DE W1AW <