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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
A 15-bit Hamming code requires

 4 parity bits
 15 parity bits
 5 parity bits
 none of these.

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Digital Electronics
When will be the output of an exclusive-OR gate is HIGH ?

 The inputs are different
 The inputs are equal
 All inputs are LOW
 All inputs are HIGH

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either

 a NOR or an X-NOR
 a NAND or an AND
 a NAND or an X-NOR
 a NAND or an X-OR

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Digital Electronics
The decimal number 0.246 in binary is

 0.001101
 0.011011
 0.001111
 0.010111

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Digital Electronics
A small circle or dot on top of an IC represents

 Pin2
 Pin13
 Pin14
 Pin1

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