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Digital Electronics

Digital Electronics
The number of parity bits in a 12-bit Hamming code is

 6
 8
 5
 4

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Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 15
 7
 16
 4

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Digital Electronics
A bubbled AND gate is equivalent to a

 NAND gate
 X-OR gate
 OR gate
 NOR gate

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Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 2:1
 2:3
 1:1
 1:2

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Digital Electronics
What is the requirement of fullsubstractor circuit ?

 Two inputs and two outputs
 Two inputs and three outputs
 Three inputs and one output
 Three inputs and two outputs

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Digital Electronics
In an SR latch built from NOR gates, which condition is not allowed

 S=1, R=1
 S=0, R=0
 S=0, R=1
 S=1, R=0

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