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Digital Computer Electronics

Digital Computer Electronics
The OR gate has two or more input signals. If any input is _____ the output is high.

All of these
None of these
low
high

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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.

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

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

8C
None of these
9E
AF
All of these

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Digital Computer Electronics
Conversion of binary number 1010000101112 to hexadecimal number is

D9F816
A1716
D8F916
None of these
A8B916

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Digital Computer Electronics
For what logic gate the outputs in complement of the input?

XOR
None of these
NOT
OR
AND

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Digital Computer Electronics
How many outputs signals can a gate have?

more than one
None of these
both (a) and (b)
one
two only

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