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Digital Computer Electronics

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

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

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Digital Computer Electronics
The radix of the binary number is:

1
2
None of these
10
3

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Digital Computer Electronics
The inverter OR gate and AND gate are called decision-making elements because they can recognize some input _____ while disregarding others. A gate recognizes a word when its output is _____

bytes, high
character, low
words, high
bytes, low
None of these

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

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

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

755110
877110
778110
555710
None of these

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

4
3
8
6
None of these

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