In embedded programming it can be useful to control an animation on an LED matrix since a lot of LED drivers and multiplexers enable pins based on the bits pass

In embedded programming it can be useful to control an animation on an LED matrix since a lot of LED drivers and multiplexers enable pins based on the bits passed through their respective drivers. Example of how you might animate 8 LED connected to 8 pins: 10000000 01000000 00100000 00010000 00001000 00000100 00000010 00000001 You could turn that into an array to animate an LED going from left-to-right or you could just write a simple function that bit-shifts your current state to the right. It's also useful in scrolling text: Imagine that 8x8 above contains a character like O. You could animate the O moving to the left by shifting the bits in each row to the left by one over and over again (according to whatever speed you've defined).