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Digital Computer Electronics

Digital Computer Electronics
The logic 1 in positive logic system is represented by:

negative voltage
lower voltage level
zero voltage
higher voltage level
None of these

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Digital Computer Electronics
The m-bit parallel adder consists of:

m/2 full adders
m-1 full adders
m full adders
None of these
(m+1) full adders

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

XAND
AND
None of these
NOR
XOR

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Digital Computer Electronics
The digits used in a binary number system are _____ and _____

1 and 2
0 and 1
None of these
9 and 0
3 and 4

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Digital Computer Electronics
Which of the following is not true?

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

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Digital Computer Electronics
An AND gate has 7 inputs, what is the only input word that produces a 1 output?

1110000
None of these
1111
1111111

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