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Digital Electronics

Digital Electronics
Which of the following operations is commutative but not associative?

 AND
 X-OR
 NAND
 OR

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Digital Electronics
In Boolean algebra A.A is equal to

 2A
 A
 A²
 1

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Digital Electronics
EBCDIC code is a

 10-bit code
 5-bit code
 8-bit code
 7-bit code

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Digital Electronics
A 32 × 10 ROM contains a decoder of size

 32 × 32
 32 × 10
 10 × 32
 5 × 32

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Digital Electronics
Which of the following gates is known as anticoincidence detector?

 X-OR gate
 OR gate
 AND gate
 X-NOR gate

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Digital Electronics
Which is typically the longest: bit,byte,nibble,word?

 nibble
 word
 bit
 byte

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