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Digital Electronics

Digital Electronics
A gate is disabled when its disable input is at logic 0. The gate is

 NOR
 none of these
 OR
 AND

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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?

 1:2
 2:1
 1:1
 2:3

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Digital Electronics
The output of a NAND gate is low

 only when at least one input is high
 only when all the inputs are high
 only when all the inputs are low
 only when at least one input is low

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Only (III)
 Only (II)
 Both (I)&(III)
 Both (II)&(III)

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Digital Electronics
A device which converts decimal number into BCD form is called

 multiplexer
 encoder
 code converter
 decoder

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Digital Electronics
Latches are ________ circuits.

 level triggered
 pulse triggered
 count triggered
 edge triggered

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