For telegraphy pulse code modulation (PCM) is widely used.

For telegraphy pulse code modulation (PCM) is widely used. Correct Answer False

FSK (Frequency Shift Keying) is a method used to transmit binary data in form of digital signals. It is mainly used for telegraphy. In telegraphy, a modem is used to convert binary data to FSK and vice-versa, for the communication between computers and over telephone lines.
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