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Digital Computer Electronics

Digital Computer Electronics
A NOR gate has two or more input signals. All input must be _____ to get a high output

1's
low
high
some low some high
None of these

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Digital Computer Electronics
The reduced form of the Boolean expression (A+B)(A+C) is:

AC+B
AB+AC
A+BC
A+B+C
None of these

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Digital Computer Electronics
A flip-flop is a _____ element that stores a binary digit as a low or high voltage.

I/O
bus
None of these
memory
chip

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Digital Computer Electronics
Express -7 as 16-bit signed binary numbers.

1000 0000 0000 0111
0000 0000 0000 0111
0111 0000 0000 0001
0111 0000 0000 0000
None of these

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Digital Computer Electronics
A byte is consist of _____ bits

two
eight
four
None of these
ten

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Digital Computer Electronics
What is the hexadecimal equivalent of a binary number 10101111

8C
AF
None of these
9E
All of these

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