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Digital Computer Electronics

Digital Computer Electronics
Parallel adders are

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

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Digital Computer Electronics
A byte is consist of _____ bits

eight
two
four
ten
None of these

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Digital Computer Electronics
In boolean algebra, the overbar stands for the NOT operation, the plus sign stands for the _____ operation.

NAND
NOR
AND
None of these
OR

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Digital Computer Electronics
Computer ICs work reliably because they are based on _____ design.

None of these
Two-states
Top-bottom
System
Two-stage

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Digital Computer Electronics
A NOR gate recognizes only the input word whose bits are _____

0's
None of these
0's and 1's
1's
0's or 1's

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Digital Computer Electronics
Which of the following logic expression is wrong?

None of these
1 + 1 + 1 = 1
1 + 0=1
1 + 1=0
1+0+1 = 1

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