KnowraFrequency-shift keyingLinked fromLinked fromThe 6 pages that link to Frequency-shift keying, each with the reason it gives.All 6Broader topic 3Compared with 3Frequency modulationBroader topic: It uses frequency changes for communication, but selects discrete states rather than continuously tracking an analog message.Carrier waveBroader topic: It carries digital symbols as selected frequencies of a carrier.Dial-up Internet accessBroader topic: Early telephone modems used frequency changes to represent digital data.