![Keep the clock running](/sites/default/files/styles/expertise/public/expertise/2018-09/keep_the_clock_running.jpg?itok=aDVaqYAm)
Keep the clock running
Common household appliance (microwave ovens, laundry machines, etc) run an internal clock, that is reset each time power is interrupted. Inserting a very low-power real-time clock and a tiny capacitor saves the time settings and prevents the user from having to reconfigure his appliance after a loss of power.