My computer changed automatically. (Windows XP Porfessional)
I have a clock that synchronizes with the US government's atomic clock in Colorado so I always have the correct time. I walk around the house with that clock and set all the watches and other clocks to that time. (I know, AR!)
I changed all my clocks on Saturday afternoon and I have two combination Panasonic VCR and the other Panasonic has a VCR and a DVD. Those change automatically.
My Panasonic VCR and separate Panasonic TV have to be changed manually.
When I woke up this morning everything was on Daylight Savings Time.
We found out that if we unplugged the clocks, many of them reset to the correct time when plugged back in. I guess there's a computer chip inside. I never paid attention to that when purchasing them.