Ex. 1915. An Arduino analog input voltage is 4.780 volts. Arduino PWM output pin drives a low-pass filter, as shown

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Ex. 1915. An Arduino analog input voltage is 4.780 volts. Arduino PWM output
pin drives a low-pass filter, as shown in Figure 1915. The low-pass filter
converts the PWM signal back to an average-DC voltage.
Arduino specifications include: I/O voltage range of 0 to 5VDC; 10-bit A/D
input; and an 8-bit D/A PWM output. The analog input DC voltage results in
an analog output DC volage at the low-pass filter.
Determine (Vout - Vin). Arduino functions include: analogRead(), map(),
and analogWrite(). map() and analogWrite() require integer arguments. ans:1