General Science- " dot matrix " Kis Upakarann Ki Kism Hai ?

Q.12923: " डॉट मैट्रिक्स " किस उपकरण की किस्म है ?
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" डॉट मैट्रिक्स " किस उपकरण की किस्म है ? - What is the "dot matrix" type of device? - " dot matrix " Kis Upakarann Ki Kism Hai ? General Science in hindi,   printer question answers in hindi pdf  Ki Board questions in hindi, Know About scanner General Science online test General Science notes in hindi quiz book    mouse