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An $8$-bit $\text{ADC}$ converts analog voltage in the range of $0$ to $+5 \mathrm{~V}$ to the corresponding digital code as per the conversion characteristics shown in figure. For $V_{\text {in }}=1.9922 \mathrm{~V}$, which of the following digital output, given in hex, is true?

  1. $64 \mathrm{H}$
  2. $65 \mathrm{H}$
  3. $66 \mathrm{H}$
  4. $67 \mathrm{H}$

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