Is it possible to get a more accurate temperature of the Raspberry Pi processor with hardware?

Question

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Is it possible to get a more accurate temperature of the Raspberry Pi processor with hardware? Although the number is shown up to 3 numbers after the decimal point in Celsius, the values ​​are rounded to certain standards, that is, they are not accurate. For example, if my temperature is 31.142 it shows 31.476 or 30.938 (whichever is closer)

Answer 1

Sensor readings are discrete (this is not called "rounding up to standards", as you put it). An external sensor can give you data with a lower resolution, but its lower resolution will be eaten by less accuracy due to the case.
And what practical problem cannot be solved with a discreteness of half a degree?