Question

Technician A says if the input signal turn-on time is too fast for the input circuit, your program may operate as though the input is off. Technician B says it will activate the watchdog timer circuit. Who is correct?

a. Technician A only
b. Technician B only
c. Both Technician A and Technician B
d. Neither Technician A nor Technician B

Answer 1

b. Technician B only

Step-by-step explanation:

A watchdog timer is a circuit that automatically monitors the MCU (Microcontroller Unit) for any anomaly, detects it and helps the MCU to recover from the malfunction it has detected.

If the input signal turn-on time is too fast for the input circuit, that is a malfunction and this activates the watchdog timer circuit to correct this malfunction immediately. So Technician B only is correct as the watchdog timer is activated immediately once there is a malfunction.