/diy/ - Do It Yourself

7 segment and multiplexing question

its an arduino project using: http://sim.marebakken.com/SevenSeg.pdf

I have a 4 digit seven seg common anode display and the application intended requires switching between several different modes of both refresh rate and duty cycle. I'm pleased with its current display performance however...

My question is If I decided to add more displays through mx'ing would I lose any performance or brightness quality? I understand the delays and interrupts are minuscule but I don't know how much they affect the project (its for his resolution tachometers).

I know thread is at bump limit but it will still be around for a week.