Most of you might be aware that, in those days, the mouse used to come with a ball inside, and there were two rollers that actually guide the computer where the ball is moving, and, accordingly, where the mouse is moving.
Vairums no jums zina, ka tolaik pelē bija iemontēta bumbiņa, kā arī divi rullīši, kas vadīja datoru atkarībā no bumbiņas – un attiecīgi peles – kustībām.