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Digital Computer Electronics

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

OR gate
AND gate
NOR gate
None of these
NAND gate

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

AND
NOR
OR
NAND
None of these

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Digital Computer Electronics
ASCII and EBCDIC differ in

the random and sequential access method
None of these
their collecting sequences
the number of bytes used to store characters
their efficiency in storing data

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Digital Computer Electronics
The ASCII code is a 7-bit code for

letters
other symbols
None of these
All of these
numbers

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Digital Computer Electronics
In boolean algebra, the times sign stands for the _____ operation

AND
NAND
None of these
NOR
OR

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Digital Computer Electronics
A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.

sign, hexa
hexa, sign
None of these
negative, positive
positive, negative

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