$(4$ pts$)$ An $8-$bit microcontroller is being used to control the voltage applied to a DC motor. You have a $12$ Volt battery. Assuming you have access to the function void set$\_$pwm$\_$O$($int duty$).$ Show one line of code indicating how to make the function call if you need to apply $2\mathrm{.}5$ volts to the motor.

Write your answer here: set$\_$pwm$\_$o$()$

$(3$ pts$)$ If a register named Reg has $4-$bits, what is the result of the following operations:

Reg $=8$

Reg$=$Reg

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$(5$ pts$)$ Set bits $0$ and $2$ of PORTB to one and keep the remaining bits unchanged. Write your operation using decimal notation.

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$(5$ pts$)$ Set bits $0$ of PORTA to zero and keep the remaining bits unchanged. Write your operation using hexadecimal notation.

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$(5$ pts$)$ Verify if PAO is one regardless of the other bits. Write your operation using binary notation.

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$(5$ pts$)$ Set all pins of port $D$ as inputs. Use decimal notation.

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