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Digital Electronics

Digital Electronics
Which of the following is known as a mod-2 adder?

 X-OR gate
 NOR gate
 X-NOR gate
 NAND gate

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Digital Electronics
The output of a gate is HIGH if and only if all its inputs are LOW. It is true for

 NOR
 X-OR
 NAND
 X-NOR

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Digital Electronics
A sequence of binary digits is known as

 bit string
 input string
 byte string
 word string

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Digital Electronics
The binary equivalent of hexadecimal number 4F2D is

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

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Digital Electronics
In LSI, the number of gate circuits per chip is

 1000 to 10,000
 < 10,000
 100 to 999
 100 to 9,999

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

 AND
 X-OR
 OR
 NAND

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