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Digital Electronics

Digital Electronics
A half adder is a ________ circuit.

 Both A and B
 None
 Sequential
 Combinational

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Digital Electronics
How many output is high of NOR GATE ?

 1
 2
 3
 4

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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
The complement of a function A is

 Ā
 0
 A
 1

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

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

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Digital Electronics
The binary equivalent of hexadecimal number 4F2D is

 0100 1110 0010 1101
 0101 1111 0010 1100
 0100 1111 0010 1100
 0100 1111 0010 1101

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