A method and apparatus for reducing the accounting loss in the case of catastrophic failure of a microprocessor in an electronic postage meter is disclosed. In accordance with the invention a counter, preferably a ring counter, is implemented in a non-volatile memory (NVM). The ring counter is incremented...http://www.google.fr/patents/US4584647?utm_source=gb-gplus-shareBrevet US4584647 - Electronic postage meter with a ring counter
