You don't need to look up the entire multiplication in a single move. When we do multiplication outside of our own mental lookup tables, we have an algorithm for that. The one described in the article. You can size your lookup table however large you like.
replyPrinting it on paper and manually looking it up is probably cheaper with today’s ram-prices
replyAssuming the ink is free, you use some sort of scheme to take advantage of the full printable ascii character set, and you don't bother presenting key values (if necessary, you could print a key offset at the top-left of each page), just the table outputs, I'm getting a break-even point at each character being around 0.2 square nanometers.
replyThe problem is that you also need multiplication to implement OCR.
replyRecursion is such a beautiful thing
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