Seven Segments displays are useful to display numeric characters In many applications. However for the small applications and cost effective controllers need more I/Os so I planned to do a multiplexing technique.But, the multiplexing technique needs more processing speed. The data will not be latched in display if the control of the processor does some other task ….. It’s a time critical task. So I decided to have a latch for the output lines.
This MAX7219 is a good 7-segment decoder cum driver with a simple 3 wire interfacing.
I tried as in the above picture but however I am still in struggle to display the data multiplexed.
The Multiplexing technique Circuit.
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