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Digital Computer Electronics

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

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

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Digital Computer Electronics
Which of the following is not functionally a complete set?

NOR
None of these
AND, OR
NAND
AND, OR, NOT

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Digital Computer Electronics
De Morgan's first theorem says that a NOR gate is equivalent to a bubbled _____ gate.

NOR
XAND
AND
None of these
XOR

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Digital Computer Electronics
The 2's compliment of binary number 010111.1100 is

101000.01
None of these
101001.11
10111.0011
101000.0011

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Digital Computer Electronics
The Gray code for decimal 7 is

101
111
1011
100
None of these

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Digital Computer Electronics
A full-adder adds _____ bits, and producing a SUM and a _____

8, SUBTRACTION
3, CARRY
None of these
All of these
16, DIVIDE

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