ROLLER ACTIVATION APPARATUS

摘要

A roller activation apparatus includes a switch, a roller, a light generator and a light receiver. The roller contacts the switch. A wheel of the roller has at least an opening. A wheel surface of the roller is touched to activate the switch by inputting a card. The roller rotates based on a movement of the card. The light generator is disposed at a side of the roller and is for generating a light beam. The light receiver is disposed at another side of the roller and is for receiving the light beam through the opening of the wheel so as to generate a pulse signal. The pulse signal corresponds to the movement of the card.