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Question

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

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

Posted under 8051 Microcontroller Computer Architecture

Answer: (d).all of the mentioned

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Q. 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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