I also came to this topic while implementing a matrix LED display.

In one word, you may build a polling scheduler by using millis() function and timer interrupt in Arduino.

I suggest the following articles from Bill Earl:

https://learn.adafruit.com/multi-tasking-the-arduino-part-1/overview

https://learn.adafruit.com/multi-tasking-the-arduino-part-2/overview and part-3 (I cannot post more links)

I also came to this topic while implementing a matrix LED display.

In one word, you may build a polling scheduler by using millis() function and timer interrupt in Arduino.

I suggest the following articles from Bill Earl:

https://learn.adafruit.com/multi-tasking-the-arduino-part-1/overview

https://learn.adafruit.com/multi-tasking-the-arduino-part-2/overview

https://learn.adafruit.com/multi-tasking-the-arduino-part-3/overview

I also came to this topic while implementing a matrix LED display.

In one word, you may build a polling scheduler by using millis() function and timer interrupt in Arduino.

I suggest the following articles from Bill Earl:  https://learn.adafruit.com/multi-tasking-the-arduino-part-1/overview  https://learn.adafruit.com/multi-tasking-the-arduino-part-2/overview and part-3 (I cannot post more links)

I also came to this topic while implementing a matrix LED display.

In one word, you may build a polling scheduler by using millis() function and timer interrupt in Arduino.

I suggest the following articles from Bill Earl: 

https://learn.adafruit.com/multi-tasking-the-arduino-part-1/overview 

https://learn.adafruit.com/multi-tasking-the-arduino-part-2/overview and part-3 (I cannot post more links)