HP-35 Accuracy Threshhold



#2

Hello all.

Yup! I am the proud owner of a vintage HP-35!!! I am so excited!!

Curious though. I tried a little experiment:

[ pi ] [EEX] 50 [X] 50 [ENTER] 10 [x^y] [ / ]

The result unfortunately wasn't exactly the 3.141592654 I was expecting.

Furthermore, as I tried 10^22, 10^23 onward, I kept seeing a slightly greater number than 1.000 in the mantissa.

Why the degradation of accuracy? Is it because of the algorithms or that there are no guard digits or is it something else?


Edited: 22 Mar 2012, 10:15 p.m.


Possibly Related Threads…
Thread Author Replies Views Last Post
  HP-35 blind buy but buggy! Max Stone 7 2,948 11-11-2013, 05:56 PM
Last Post: Dieter
  Another HP 35 Red Dot on eBay Michael de Estrada 5 2,466 11-09-2013, 03:07 PM
Last Post: aj04062
  HP 35 ... 80 Olivier De Smet 6 2,535 08-29-2013, 07:25 AM
Last Post: Olivier De Smet
  How much accuracy does one actually need? Matt Agajanian 23 5,938 08-26-2013, 12:46 PM
Last Post: Kimberly Thompson
  HP 35 Pretty Good Purchase Today! Norman Dziedzic 1 1,487 03-05-2013, 12:52 AM
Last Post: Dan Lewis
  Estimating accuracy in finite precision computations mpi 17 4,433 02-22-2013, 09:44 AM
Last Post: mpi
  Slightly OT: Remember the extraction of the HP-35 ROM? Frank Boehm (Germany) 1 1,261 02-06-2013, 05:53 PM
Last Post: aurelio
  Silver paint for HP 35 case Anoop Sahal 2 1,481 12-26-2012, 10:17 AM
Last Post: Anoop Sahal
  HP 35 #3? ClausB 5 2,154 12-11-2012, 02:48 AM
Last Post: Maximilian Hohmann
  HP 35 Red Dot page Michael Eckstein 6 2,391 11-05-2012, 03:03 AM
Last Post: Michael Eckstein

Forum Jump: