Abstract: In a counter readout control apparatus comprising a plurality of counters, in which an upper-order counter performs a counting operation upon receiving a carry from a lower-order counter, this apparatus further comprising, a first means for resetting each flag storing memory in which a carry of each counter, with an exception of an uppermost-order counter, is stored (Step S21), a second means for sequentially reading out the plurality of counters from an upper-order counter to a lower-order counter (Step S22 to S25), a third means for, after reading each counter value by means of the second means, testing as to whether the carry is set or not in the flag storing memory (Step S26 to S29), and a fourth means for, in the case in which the carry is set in the flag storing memory, resetting the flag storing memory having the carry (Step S27A, S28A, S29A) and performing a re-read operation only of counters having an order higher than an order of a counter which has been changed due to a reception of the carry (Step