vintage calc drag races



#2

Hi everybody, I was messing around with some old machines last night and thought I would see which one ran the fastest. The results were a bit surprising to me. The three machines were a 15c, 34c, and 29c. I put three different types of identical programs into each machine (one that had many calls to subroutines, one that was just a simple counting loop, and one that was just a string of transcendental functions back to back). I was careful to put the programs in the same relative position within program memory in all three machines as well.

Now the (surprizing) results...the 29C outran the other two machines in all three types of programs! I wouldn't have expected the oldest machine to (apparently) run the fastest. Is this because the 29c has a smaller ROM menu, and fewer program lines to search, or does it indeed run faster? Comments please. Thanks, Hal


#3

I was as surprised as yourself when I discovered the HP11C being significantly slower than my HP29C. I've understood by this forum that the Voyager series was designed to last a life time on a set of batteries (at the cost of speed). Perhaps because it was the first series to run on batteries (ignoring the Woodstocks could run on penlights as well), HP might have thought that the user mustn't be bothered with changing expensive batteries within some years after purchase of the calculator. Obviously a matter of choice.

It's somewhat strange that the Spices are slower than Woodstock. I can't think of a reason for that.


Possibly Related Threads...
Thread Author Replies Views Last Post
  Vintage HP 15C with bleeding LCD display Michael de Estrada 1 322 10-30-2013, 09:54 AM
Last Post: Jeff O.
  wp34s calc to calc communication Andrew Nikitin 1 290 07-29-2013, 01:57 AM
Last Post: Marcus von Cube, Germany
  Another non-HP RPN vintage calculator joins the collection Michael de Estrada 2 431 07-23-2013, 04:10 PM
Last Post: Walter B
  Vintage calculators Kiyoshi Akima 12 718 10-03-2012, 06:36 AM
Last Post: Charles C(UK)
  Can We Get a Cable Channel Interested in Vintage Calculators? Namir 40 1,867 06-07-2012, 05:33 PM
Last Post: LHH
  [OT] Vintage Coputer Festival East 2012 David Hayden 4 320 05-08-2012, 06:10 PM
Last Post: Mike T.
  Expected lifetime and failure modes of vintage 15C? Eric Zoob 30 1,675 03-22-2012, 12:02 PM
Last Post: Juan J
  Vintage logarithm round up McAllan 9 526 03-18-2012, 11:17 AM
Last Post: Dieter
  OT: Toshiba BC-1412, fascinating vintage technology Juergen Keller 14 770 03-11-2012, 01:45 PM
Last Post: Andres Capdevila
  Re: Spares for vintage calculators HP-25, HP-27? McAllan 1 210 03-02-2012, 08:31 AM
Last Post: samo

Forum Jump: