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Computers in 1969 were still primitive. This is an odd statement since the electronic computer was over two decades old by that time. Yet the basic procedure to program a computer had been unchanged for years: in 1969, one still used punched paper cards to write a computer program and submitted this card deck to a central computer facility. The memory available on the mainframe computer was miniscule: the IBM 360 mainframe computer, figure 1 at McGill had 128 Kbytes of available main memory. I remember limiting my computations to solve about a 100 X 100 matrix; anything larger was likely to cause a program overflow.
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