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Synergy User Manual and Tutorial. - THE CORE MEMORY

Synergy User Manual and Tutorial. - THE CORE MEMORY

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<strong>Synergy</strong> <strong>User</strong> <strong>Manual</strong> <strong>and</strong> <strong>Tutorial</strong><br />

of an accumulator to be attached to the input of a control line of another accumulator.<br />

This could allow data-sensitive operations or operations based on data content. It also<br />

had a unit called the “Master Programmer”, which performed nested loops or iterations.<br />

ENIAC’s units could operate simultaneously, performing parallel calculations.<br />

Eventually this machine could perform IF-<strong>THE</strong>N conditional branches. It is likely that<br />

this was the first machine with this operation. xxi<br />

In 1944, because of suggested improvements from people involved with the project, the<br />

U.S. Army extended the ENIAC project to include research on Electronic Discrete<br />

Variable Automatic Computer (EDVAC), a stored program computer. At about this<br />

time, John von Neumann (1903 - 1957) visited the Moore School to take part in<br />

discussions regarding EDVAC’s design. He is best known for producing the bestrecognized<br />

formal description of a modern computer, based on a stored program<br />

computer, known as the von Neumann architecture, in his 1946 paper "First Draft of a<br />

report to the EDVAC". The basic elements of this architecture are:<br />

29

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