The code is for directly controlling the LED matrix (I had made a 10X8 matrix) through Arduino Uno. Here, I have used multiplexing which makes the task a bit difficult to understand at first. But once ...

Not OP, but I have a few beef with the CPU core. – I like unified memory model e.g. Arm, STM8. I/O is memory mapped. So Any memory can be used for code or data without requiring special ...