I plugged this vintage IBM trackball mouse into my iPad – here’s how it went

Computer mice have come a long way since their prototypical introduction some sixty years ago. Gone are the days of underside trackballs, giving way to light-based optical sensors. Mice have shed their wired tails, too, in favor of Bluetooth and 2.4Ghz dongles. They’ve also evolved additional buttons, scroll wheels, and, in some cases, even rumble packs and dedicated displays.