Koodu QR, orukọ kikun ti Koodu Idahun iyara, ti a tun mọ ni “koodu Idahun Yara”, jẹ koodu onisẹpo meji matrix kan, eyiti o jẹ idagbasoke nipasẹ ile-iṣẹ ọkọ ayọkẹlẹ Japanese Denso Wave ni ọdun 1994, ati olupilẹṣẹ akọkọ ti koodu QR Yuan Changhong Nitorina tun mọ bi ...
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