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

Post by answerhappygod »

a) masking of bits
b) ensuring that initially, all keys are open
c) checking that whether the key is actually pressed or not
d) all of the mentioned
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