Choose a device with general-purpose I/O pins, such as the LPC2103, and write an assembly routine that sequentially walks a 1 back and forth across the I/O pins. In other words, at any given time,...

Choose a device with general-purpose I/O pins, such as the LPC2103, and write an assembly routine that sequentially walks a 1 back and forth across the I/O pins. In other words, at any given time, only a single pin is set to 1— all others are 0. Set up the Keil tools to display the pins (you might want to compile and run the Blinky example that comes with the tools to see what the interface looks like).