Abstract: An electronic recorder is disclosed which acts as an elapsed time indicator for monitoring the operation of at least one item of equipment and providing display or other indication of the total time for which the item of equipment has been energized. The recorder includes a solid-state oscillator and a divider which together constitute a time-base for producing clock pulses only when the item of equipment is in an energized state. A solid-state counter counts the clock pulses and a solid-state memory stores information corresponding to the counter total. So that the recorder can retain its cumulative total count even when de-energized with the item of equipment, the memory is of the non-volatile type which retains its stored information even when de-energized. A solid-state display means displays the counter total to provide an indication of the total time for which the item of equipment has been energized.