Slick graphics, reading analogue values and making them appear in graphs, cockpit-style meters and dials, all on USB… How do they do it?

Like this: a single board connected up to the PC via a USB link and sporting an advanced PIC microcontroller. Add some software and there’s your USB demo board doubling as a development system to help you discover how USB is implemented on a microcontroller programmed to handle analogue and digital I/O for real world applications.