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FYI, past issues of the HP Journal include BCD calculator algorithm descriptions for square root (1977-05), trig functions (1977-06), inverse trig functions (1977-11), and logs (1978-04). Although not credited in the 1977-05 article, the square root algorithm is the same one used in the circa-1955 Friden SRW-10 mechanical calculator (with a link to its algorithm on that page).

Thank you for these articles. They are both interesting and nostalgic.

(02-05-2015 09:19 PM)ColinJDenman Wrote: [ -> ]Thank you for these articles. They are both interesting and nostalgic.

There are more related articles and links to the original publications on jacques laportes website

http://www.jacques-laporte.org/TheSecret...rithms.htm

Bernhard

(02-06-2015 05:05 PM)PANAMATIK Wrote: [ -> ]http://www.jacques-laporte.org/TheSecret...rithms.htm

Bernhard

Ditto thanks

Thank you all for the links to these cool articles and web sites!

Namir