1. Iyatọ laarin ẹrọ kika ojuami ati pen kika kika iwe naa nlo imọ-ẹrọ ti titẹ koodu QR kan lori iwe lati fi sabe faili ohun ninu iwe naa.Olumulo naa yan oju-iwe kan lati ka lakoko lilo, ati tẹ lori apẹrẹ, ọrọ, nọmba, ati bẹbẹ lọ lori oju-iwe yẹn.Fun akoonu,...
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