Question

Why initially all keys are considered open before detecting the key pressed?

a.

to make task easy

b.

to remove the errors caused by other pressing keys during detection

c.

to remove the flow problems

d.

none of the mentioned

Posted under Microcontroller Computer Architecture

Answer: (b).to remove the errors caused by other pressing keys during detection

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Q. Why initially all keys are considered open before detecting the key pressed?

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