Which of the following steps detects the key in a 4*4 keyboard matrix about the key that is being pressed?

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Option D: all of the mentioned

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Practice and solve "Which of the following steps detects the key in a 4*4 keyboard matrix about the key that is being pr..." for Electrical - Microprocessor. The correct answer is Option D: all of the mentioned. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.

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Option A: masking of bits

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Option B: ensuring that initially, all keys are open

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Option C: checking that whether the key is actually pressed or not

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