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Digital Electronics

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

 NAND
 AND
 OR
 NOR

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Digital Electronics
Which of the following BCD codes with an odd parity bit included in the end of code group, have error in the code? (I)1001010110000 (II)0100011101100 (III)0111110000011 (IV)1000011000101

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

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Digital Electronics
The main equation for a D flip flop is

 Q=D
 Q=D'
 Q=1
 Q=0

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Digital Electronics
Which of the following shows the correct attachment of even parity bit to the data 00001001?

 000010011
 000001001
 100001001
 000010010

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Digital Electronics
The most suitable gate to check whether the number of 1s in a digital word is even or odd is

 NOR
 X-OR
 NAND
 AND, OR, and NOT

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Digital Electronics
Which of the following codes is known as the 8421 code?

 ASCII code
 Gray code
 XS-3 code
 BCD code

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