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Digital Computer Electronics

Digital Computer Electronics
In which code the successive code characters differ in only one bit position?

algebraic code
None of these
excess 3 code
8421 code
gray code

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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
OR
AND
None of these
NOR

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Digital Computer Electronics
The number of binary bits required to represent a hexadecimal digit is

3
4
8
None of these
6

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Digital Computer Electronics
Conversion of hexadecimal number 1D7F16 to a decimal number is

778110
555710
877110
None of these
755110

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

AND
NAND
XOR
OR
None of these

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Digital Computer Electronics
A positive AND gate is also a negative

OR gate
NOR gate
None of these
AND gate
NAND gate

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