I really wish microwaves and ovens came with radio-controlled clocks. While the mains frequency is usually a great (long-term) stable frequency source, the big

I really wish microwaves and ovens came with radio-controlled clocks. While the mains frequency is usually a great (long-term) stable frequency source, the bigger problem is that all microwaves I know lack a backup battery and require re-setting after unplugging them.