Question $3$

Following the previous question, indicate which of the following signals are digital signals.

$1$ point

Weight $$ Type: Weight; Range: $[25-100$ kg$]$

Respiratory Rate $$ Type: Numerical; Range: integers from $8$ to $40.$

Heart rate $$ Type: Numeric; Range: Integers from $35$ to $300$

Performance $$ Type: Real number; Range: $[0-1]$

ECG $($Electrocardiogram$)$ Type: Voltage; Range: $[0\mathrm{.}5-4$ mV$].$

Temperature $$ Type: Temperature, Range: from $18$C to $22$C $($only integer and half$-$integer values are measured$)$