What "Digital" meant in 1979...

By Andrew Davidson
on January 23, 2010

Scanned this off a very old record, one recorded in the infancy of digital recording in 1979. Note the rounding up to 50khz samples (more like 48kHz), or 'giving a uniform digit to each part of the spectrum' (i.e. 1 or 0).

Have any examples of other laughable phrases from Old Copywriters?