In Memoriam Kalocsay Kálmán CsiszárAda, Budapest, 1994 (in Hungarian) Omaĝe al Kálmán Kalocsay 1 – 9 kötet, CsiszárAda, Budapest, 1998 – 2006 (in Esperanto)
hardware and software concepts worked out much later by Charles Babbage and Ada Lovelace. In 1679, while mulling over his binary arithmetic, Leibniz imagined