'' Dutch computer scientist and computer designer (1926)'' * Testudo (Latin for 'tortoise', because of its (lack of) speed), 1949 * Zebra (Zeer Eenvoudige Binaire Reken Automaat, or Very Simple Binary Calculating Automaton), 1952 * Credited with first use of LastInFirstOut stack for subroutines in *** http://neil.franklin.ch/Usenet/alt.folklore.computers/20030302_Push_and_pop_first_used_when * Credited with the ZeroOneInfinityRule by DougMerritt ''- Doug, can you confirm this?'' ** After some research, including talking to a former student of his, I then asked van der Poel directly, and he confirmed that he was the originator. -- Doug ---- CategoryPerson