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Digital Computer Electronics

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

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

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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.

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

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Digital Computer Electronics
The leading bit stands for the _____ and the remaining bits for the _____ is known as signed binary numbers.

value, sign
sign, magnitude
sign, remainder
None of these
variable, value

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Digital Computer Electronics
One way to simplify the sum-of-products equation is to use boolean algebra. Another way is the _____ map.

Karnaugh
Schottky
None of these
Standard
De Morgan

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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
NOR
None of these
OR
AND

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

112410
None of these
103710
103410
102410

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