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Digital Computer Electronics

Digital Computer Electronics
Which of the following Boolean algebra rules is wrong?

0 + A = A
A + A = A
1 . x = 1
None of these
1 + A = 1

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Digital Computer Electronics
The output of the following gate is 0 only if at least one of the inputs is 1:

None of these
AND gate
EX-OR gate
NOR gate
OR gate

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Digital Computer Electronics
_____is an abbreviation for binary digit.

None of these
base
bit
0 and 1
bingit

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Digital Computer Electronics
Parallel adders are

None of these
both of the above
All of these
combinational logic circuits
sequential logic circuits

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Digital Computer Electronics
Express -7 as 16-bit signed binary numbers.

0111 0000 0000 0000
0000 0000 0000 0111
1000 0000 0000 0111
None of these
0111 0000 0000 0001

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Digital Computer Electronics
An OR gate has 6 inputs. What is the only input word that produces a 0 output?

111000
None of these
111
111111

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