<P> Aiken published a press release announcing the Mark I listing himself as the sole "inventor". James W. Bryce was the only IBM person mentioned, even though several IBM engineers including Clair Lake and Frank Hamilton had helped to build various elements . IBM chairman Thomas J. Watson was enraged, and only reluctantly attended the dedication ceremony on August 7, 1944 . Aiken, in turn, decided to build further machines without IBM's help, and the ASCC came to be generally known as the "Harvard Mark I". IBM went on to build its Selective Sequence Electronic Calculator (SSEC) to both test new technology and provide more publicity for the company's own efforts . </P> <P> The Mark I was followed by the Harvard Mark II (1947 or 1948), Mark III / ADEC (September 1949), and Harvard Mark IV (1952)--all the work of Aiken . The Mark II was an improvement over the Mark I, although it still was based on electromechanical relays . The Mark III used mostly electronic components--vacuum tubes and crystal diodes--but also included mechanical components: rotating magnetic drums for storage, plus relays for transferring data between drums . The Mark IV was all - electronic, replacing the remaining mechanical components with magnetic core memory . The Mark II and Mark III were delivered to the US Navy base at Dahlgren, Virginia . The Mark IV was built for the US Air Force, but it stayed at Harvard . </P> <P> The Mark I was disassembled in 1959, but portions of it are displayed in the Science Center, as part of the Harvard Collection of Historical Scientific Instruments . Other sections of the original machine were transferred to IBM and to the Smithsonian Institution . </P>

Who did the navy send to program the mark 1