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Digital Computer Electronics

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

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

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

None of these
755110
778110
877110
555710

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Digital Computer Electronics
What is the ASCII code for T?

1011111
1011010
None of these
1010100
1011100

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

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

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Digital Computer Electronics
Conversion of binary number 100000000002 to decimal number is

103710
None of these
102410
103410
112410

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Digital Computer Electronics
_____ has become the most widely used bipolar family.

ECL
MOS
DTL
None of these
TTL

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