What is the purpose of using a prescaler with a frequency counter?
Amplify low-level signals for more accurate counting
Multiply a higher frequency signal so a low-frequency counter can display the operating frequency
Prevent oscillation in a low-frequency counter circuit
Reduce the signal frequency to within the counter's operating range✓Правильный ответ
Объяснение
A prescaler is a fixed-ratio divider placed ahead of the counter, so a signal above the counter's range is divided down to a frequency it can count and the reading is scaled back up by the division ratio. It divides rather than multiplies, and it neither amplifies weak signals nor suppresses oscillation.