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Digital Electronics

Digital Electronics
The output of a gate is HIGH when at least one of its inputs is LOW. It is true for

 NOR
 NAND
 X-OR
 OR

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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
 1:2
 1:1

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Digital Electronics
How many numbers are used in the decimal number system?

 0 to 10
 1 to 10
None of these
 0 to 9

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Digital Electronics
For checking the parity of a digital word, it is preferable to use

 X-OR gates
 AND gates
 NOR gates
 NAND gates

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Digital Electronics
How many output is high of NOR GATE ?

 1
 2
 4
 3

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Digital Electronics
A bubbled NAND gate is equivalent to a

 X-OR gate
 NAND gate
 NOR gate
 OR gate

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