# Re: laptops ok?

**URL:** <https://psychtoolbox.discourse.group/t/re-laptops-ok/994>\
**Category:** Uncategorized\
**Created:** [September 27, 2001, 9:20pm UTC](https://psychtoolbox.discourse.group/t/re-laptops-ok/994 "2001-09-27T21:20:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\
**Post date:** [September 27, 2001, 9:20pm UTC](https://psychtoolbox.discourse.group/t/re-laptops-ok/994/1 "2001-09-27T21:20:00Z")

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> \>Dear PsychToolbox,  
> \>  
> \>I have a quick question: can one use your software with Macintosh  
> \>laptops? Would there be any problems with control of timing when  
> \>presenting stimuli at relatively high frequencies (\>7Hz)? I would be  
> \>very grateful if you are able to find the time to let me know.  
> \>  
> \>Many thanks,  
> \>  
> \>Anil Seth

dear anil  
  
yes, everything runs fine on Powerbooks and iBooks. You should bear in   
mind that most LCD displays are very dependent on viewing angle, which   
makes it difficult to achieve accurate control of contrast. You might   
consider using your laptop to drive a CRT. On Macs, the PsychToolbox   
fully supports using multiple displays.  
  
best  
  
denis  
  
p.s.   
the forum is the best place to submit all queries. allen, david, and i   
all read the forum traffic.