Computer Science for IGCSE & O level - Hardware (Section 2 - No. 18)
In a street lighting system, what does the system do if the light sensor signal indicates it's nighttime?
The lamp is turned on.
The lamp is turned off.
The sensor reading is stored in memory.
The microprocessor sends a signal to the ADC.
Vysvetlenie
At night, the system turns the street lamps on.