See the image:

**Frequency = 1 / Tcycle **and Hertz is the unit of frequency. It gives the number of cycles in one second.

**Duty cycle = Thigh / Tcycle**. It gives fraction of one cycle for which the signal is high.

See the image:

**Frequency = 1 / Tcycle **and Hertz is the unit of frequency. It gives the number of cycles in one second.

**Duty cycle = Thigh / Tcycle**. It gives fraction of one cycle for which the signal is high.

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