Например,
For digital instruments, the resolution feature is often expressed by the number of digits displayed by the instrument.
или
The first category includes low-accuracy working instruments, with a resolution of no more than 4 ¾ digits (resolution counts ≤ 39 999).

Пока перевожу: counts "единицы" (?), digits "разряды".

Правильно ли так переводить?

Заранее благодарю