Short for
frequency-shift keying, a
modulation technique used by
modems in which two different frequencies in the
carrier signal are used to represent the
binary states of 0 and 1. Using FSK, a modem converts the binary data from a computer into a binary form in which logic 1 is represented by an
analog waveform at a specific frequency and logic 0 is represented by a wave at a different specific frequency.
Compare with PSK.
