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Sok-khieng Chum Hun Offline
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#2
04-28-2012, 08:27 PM

HP calculators older then the HP 48 use CORDIC for their trigonometric and logarithmic capabilities.

Do newer calculators such as HP 35s, TI 89 or TI NSPIRE do the same?

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Matt Agajanian Offline
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#3
04-28-2012, 08:31 PM

But, wouldn't that mean that the 48 series shared the same trig bugs as the 35S?

Edited: 28 Apr 2012, 8:31 p.m.

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Eric Smith Offline
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#4
04-28-2012, 08:34 PM

No. The bugs weren't a fault of the CORDIC algorithm, but of the specific code implementing it.

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Eric Smith Offline
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#5
04-28-2012, 08:33 PM

Yes, most calculators using CORDIC algorithms for their trigonometric and inverse trigonometric functions. HP used them starting with the 9100A desktop computer in 1968 through some of their latest calculators. I don't know whether CORDIC is used in the relatively recent HP-branded calculators that were not actually developed by HP.

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