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Digital Computer Electronics

Digital Computer Electronics
Conversion of an octal number 1068 to binary number is

11100102
10001102
100001102
None of these
11001102

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Digital Computer Electronics
What logic function is produced by adding an inverter to each input and the output of an AND gate?

NOR
None of these
XOR
OR
NAND

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Digital Computer Electronics
Which gates is known as universal gate?

NAND gate
XOR gate
AND gate
None of these
NOT gate

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

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

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Digital Computer Electronics
The time required for a pulse to decrease from 90 to 10 percent of its maximum value is known as

binary level transition period
propagation delay
decay time
rise time
None of these

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Digital Computer Electronics
The inverter OR gate and AND gate are called decision-making elements because they can recognize some input _____ while disregarding others. A gate recognizes a word when its output is _____

None of these
bytes, low
words, high
character, low
bytes, high

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