$(6)$ Draw a $4-$bit flash ADC circuit, How many comparators are required?

$($b$)$ For an input signal in the range of $0$ to $10$ V $,$ what are the reference voltages needed?

$($c$)$ Indicate the digital code you expect at the output of the comparators and at the output of the priority encoder for the inputs of $($i$)0\mathrm{.}4$ V $,($ii$)5\mathrm{.}8$ V $,($ii$)9\mathrm{.}2$ V $.$