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Digital Computer Electronics

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

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

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Digital Computer Electronics
The master slave JK flip-flop is effectively a combination of

an SR flip-flop and a D flip-flop
a T flip-flop and a D flip-flop
two T flip-flops
None of these
an SR flip-flop and a T flip-flop

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Digital Computer Electronics
With an RS latch a high S and low R sets the output to _____ ; a low S and a high R _____ the output to low.

No change, set
Race, high
None of these
set, reset
high, reset

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Digital Computer Electronics
Which of the following is not true?

1 x 0 = 0
1 x 1 = 1
None of these
0 x 1 = 1
0X0 = 0

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Digital Computer Electronics
Subtraction of 1001011002 from 11101010102 is

1101000012
11110000012
None of these
11110111112
10010111102

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Digital Computer Electronics
Addition of 11012 and 10102 is

110002
101012
None of these
101112
110112

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