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From: Nandu@cup.portal.com (Narendra J Kulkarni)
Newsgroups: sci.electronics
Subject: Re: pulsing LEDs
Message-ID: <32419@cup.portal.com>
Date: 4 Aug 90 00:50:53 GMT
References: <53169@iuvax.cs.indiana.edu>
Organization: The Portal System (TM)
Lines: 6

If I remeber correctly, the persistance of vision allows eye to see the stabl
e display ( flicker free ) even if the LED is pulse driven, The advantage of
multiplexing is strictly for saving the components, actually at very high 
current, more current is wasted in heat generation in the LED, most LEDs have
a linear region in which light output is proportional to drive current and by
calculating the duty cycle one can determine the peak pulse current