system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do our cheap electronic clocks automatically change time when it’s spring forward?

I have a cheap electronic clock from Walmart. Did it get programmed for the next 6 years or how ever long it may last as an appliance? Or is this some circuit board clock embedded? I seriously have no idea.
gpt
Did it automatically set its time? There are radio stations that broadcast the time is a format that can be easily deciphered by electronics. This allows clocks to automatically set the time and change to DST.