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HP-65 40th anniversary edition
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HP-65 40th anniversary edition
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HP-65 40th anniversary edition
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01-22-2014, 01:53 PM
(This post was last modified: 01-22-2014 01:55 PM by Eddie W. Shore.)
Post: #19
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RE: HP-65 40th anniversary edition
(01-19-2014 05:30 PM)W_Max Wrote: Wow! Great day! First soviet RPN calc B3-21 (1977) congrats HP-65 with birthday! The presence of e^(ix) (shift function of 2nd row, 5th key) suggests that the B3-21 is capable of complex numbers. Interesting that the B3-21 does not have the tangent function, instead of having the user to use e^(ix) then divide function sequence. (http://www.taswegian.com/MOSCOWx/b3-21.html) Out of curiosity, what are B/O, C/N, and NN? Apologies if I did not write those symbols correctly. |
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