Which Acronym Applies to Serial Data in Which the "Ones

question 3

Multiple Choice

Which acronym applies to serial data in which the "ones" and "zeros" are defined not only by the voltage value but also by the bit length (a "one" can be a short high-voltage pulse or a long low-voltage pulse and a "zero" can be a short low-voltage pulse or a long high-voltage pulse) ?

• A) IFR
• B) CRC
• C) VPW
• D) PWM

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