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Zeroing Working Variables

Nobody programming today would consider it, but AAL wrote on p. 708:

At the end of a calculation, therefore, every column ought as a general rule to be zero, excepting those for results.

That's why I thing a zero is missing in line 24 column V13.

Zeroing out intermediate values still seems to be current practice when Alan Turing wrote his On Computational Numbers…; on page 232:

The others are just rough notes to „assist the memory “. It will only be these rough notes which will be liable to erasure.

Note that this is in contrast to our modern understanding of Turing machines.


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