seriously they do not, I completed EFt about 2 years ago and there is not computer at all on it, the nav is much more indepth at PPL level, on EFt a lot more is taught so that you can react quicker to changes in flight and spend less time with your head down with a wheel. But then again it is geared to put pilots in the cockpits of a fast jet and how cares about drift at 450 knots!
You do not use a wheel at all, not for fuel/time/headings/it is all done in your head. which i feel is enough personally. everyone develops there own nav methods and i never use a wheel now.