: How does a digital clock that operates fully on electrition keeps the correct time when it’s unplugged?

Question

: How does a digital clock that operates fully on electrition keeps the correct time when it’s unplugged?

In: 0

Answer 1

It either has a battery backup, or it has some kind of connection to find the correct time when it gets plugged in (e.g. an antenna that receives the atomic clock signal, or an internet connection)