Hi Guys, Not sure if this is more OT than PIC. You probably already seen this, but I decided to post it anyway for the ones that didn't. Look for the link to the video reply from Microchip when this guy just slated the pickit3, very funny. http://www.eevblog.com/2010/10/27/eevblog-121-geda-interview-with-dj-del orie/ It just gives you a different view of the company that personally I like. Best Regards Luis =20 -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of Olin Lathrop Sent: 21 October 2010 22:16 To: Microcontroller discussion list - Public. Subject: Re: [PIC] Convert number to bit position Joe P. Farr wrote: > An advantage of pulse drive is that the human eye behaves as a > partially integrating and partially peak-reading photometer. As a > result, the eye perceives rapidly pulsed light somewhere between the > peak and the average brightness. This means that a low-duty-cycle, > high-intensity pulse of light looks brighter than a DC signal equal > to the average of the pulsed signal. An advantage of multiplexed > operation, therefore, is an improvement in display intensity for a > given average power consumption. There is some of that, but that has nothing to do with current saving due to only one LED being on at a time, which was the original assertion: >> Depending on how your configure your LEDs, one advantage of >> multiplexing could be a power saving as only one LED's on at a time If I remember right, the brighter pulse effect only happens at frequencies that are obvious to the observer, and probably annoying in a real display. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .