Abacus calculators - Dave: A new link?



#3

I did a search for the ABACUS electronic calculators but found this web site:

http://www.ee.ryerson.ca:8080/~elf/abacus/

The scanned abacus manual is nice - I can see where HP might of got some ideas for making their manuals comprehensive! See:

http://www.ee.ryerson.ca:8080/~elf/abacus/leeabacus/

I now see how lucky we are to have been given the legacy of the HP35 for pocketable 10+ digit calculators that require only a little knowledge from the operator.

For an amusing story about Richard Feynman getting lucky look at:

http://www.ee.ryerson.ca:8080/~elf/abacus/feynman.html


#4

I don't know if this is significant, but the manual for the Lee abacus described in the second URL

http://www.ee.ryerson.ca:8080/~elf/abacus/leeabacus/

mentions the "red dot" several times. (see, eg, p.2, bottom paragraph.) Did HP back in the early 70s think that their new handheld should have a red dot?

Larry


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