After a well thought out treatment of complex numbers on the 15C and the 42S for example, what went wrong with the convoluted management of them on the 32Sii and 33S?
tm
HP's Handling of Complex Numbers


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07312006, 10:45 PM
After a well thought out treatment of complex numbers on the 15C and the 42S for example, what went wrong with the convoluted management of them on the 32Sii and 33S? tm ▼
07312006, 11:23 PM
Quote: I agree completely with your sentiments, but what had already happened was the HP32S (the forerunner of the 32SII and 33S), and the HP41 Math Pac. Apparently, it was decided not to provide good complexnumber handling on the HP32S, but rather to implement in microcode what had been developed as RPN programs for the HP41 Math Pac (and later copied to the Advantage Pac). How many readers have noticed how similar those complexnumber function sets are? I'm glad that the functions were included on the HP32S/32SII/33S, because they are very useful for programmed applications, albeit cumbersome for interactive use. The HP32S didn't have the flexibility of the HP42S display, but the HP15C's implementation of complex numbers might have been a bit awkward on the menudriven HP32S. For example, the indirect register "I" was denoted "i" on the HP32S because there already was a regular storage register I. Functions for Re<>Im, Re>Cpx ("f I"), SHOW Im ("f (i)"), Cpx mode ("SF 8"), Re mode ("CF 8") would have been needed under a menu (or two). Here's a post you might find interesting: http://www.hpmuseum.org/cgisys/cgiwrap/hpmuseum/archv014.cgi?read=63415#63415  KS
Edited: 31 July 2006, 11:25 p.m. 