নিচের কোনটি একটি ইনপুট ডিভাইস (Input device)?
A. সি আর টি মনিটর (CRT Monitor)
B. স্পিকার (Speaker)
C. প্রিন্টার (Printer)
D. কী-বোর্ড (Key Board)
সঠিক উত্তরঃ
D.
কী-বোর্ড (Key Board)
Explanation:
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