Question

To detect that in which column, the key is placed?

a.

we can mask the bits and then check it

b.

we can rotate the bits and then check that particular bit which is set or reset(according to the particular condition)

c.

none of the mentioned

d.

both of the mentioned

Posted under 8051 Microcontroller Computer Architecture

Answer: (d).both of the mentioned

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Q. To detect that in which column, the key is placed?

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