HP 50 as a stop watch.



#2

Hi,

I wish to use the HP50 as a stop watch to time road runners in a race. It should not be difficult to program to do this.

The only problem is that the calculator can go to sleep if there is a big gap between runners. This means that you could miss time a runner.

I have searched for a internal flag that might control the calculator sleeping, but I have had no success.

Does anyone know how to stop the HP from sleeping during a race?


#3

have you tried with the internal variable TOFF??

you can define an idle time before variable STARTOFF is executed.

Remember 1second = 8192 TICKS

Regards

Edited: 9 Sept 2009, 8:20 a.m.


#4

I must be missing something. I have tried TOFF just by keying it in but get no response. If I do a seach in the electronic manual on TOFF nothing comes up. How do you get access to this command?

The variable STARTOFF is one of your variables?


#5

Store a hexadecimal number as TOFF in HOME. It represents tics (8192/sec)

So #8192d * 60 * min will set a new off time. As for a stopwatch, look here: http://www.software49g.gmxhome.de/EnglishSeite01.htm#SWC

TW


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP Prime... NOT meant to replace HP48,49,50 ? Chris Pem10 21 3,545 11-18-2013, 03:30 PM
Last Post: Chris Smith
  ANN: A MacOSX Kermit program for HP48/49/50 calculators Paul Onions 2 954 09-08-2013, 04:55 AM
Last Post: Paul Onions
  HP-50 on Raspberry Pi? The HP-67 come true? Matti Övermark 10 2,054 07-30-2013, 09:40 PM
Last Post: Matti Övermark
  Precision DC-50 Mic 3 1,010 05-26-2013, 01:27 PM
Last Post: DavidM
  Stupid idea of the day: 41-compatible watch bhtooefr 0 602 03-31-2013, 08:23 AM
Last Post: bhtooefr
  downloading HO 229 v. 2,0 from HP 49/50 Astronomy Programs list Al 10 1,712 11-26-2012, 05:38 PM
Last Post: Al
  Symbolic limit of a function of 2 variables, HP49/50 Gilles Carpentier 0 533 08-26-2012, 10:28 AM
Last Post: Gilles Carpentier
  Best Keyboard of the HP 28/48/49/50 Series Eddie W. Shore 9 1,914 07-12-2012, 07:21 AM
Last Post: Dave Britten
  Formatting 28/48/50 programs Matt Agajanian 9 1,786 06-06-2012, 06:01 PM
Last Post: Gilles Carpentier
  Matrix/Array 28/48/50 Question Matt Agajanian 9 1,687 06-04-2012, 10:31 PM
Last Post: Matt Agajanian

Forum Jump: