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Digital Computer Electronics

Digital Computer Electronics
Which of the following boolean algebra statements represent commutative law

None of these
(B+C)(A.B)+(A.C)
A+AA
(A+B)+CA+(B+C)
A+BB+A

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Digital Computer Electronics
What logic function is produced by adding an inverter to each input and the output of an AND gate?

None of these
XOR
NAND
NOR
OR

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Digital Computer Electronics
Conversion of a octal number 638 to its decimal number is

None of these
5310
5710
6110
5110

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Digital Computer Electronics
Addition of 1101011012, 1110111012, 0001111112, 1001011012, 1111101112 is

10001010001012
11110110000102
10010000000102
10110101110102
None of these

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Digital Computer Electronics
Addition of 102 and 112 is

1112
1012
1002
None of these
1102

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Digital Computer Electronics
The EXCLUSIVE - NOR gate is equivalent to an _____ gate followed by an invertor.

NAND
AND
XOR
OR
None of these

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