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Digital Electronics

Digital Electronics
NOT gates are to be added to the inputs of which gate to convert it to a NOR gate?

 X-NOR
 AND
 NAND
 OR

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Digital Electronics
To get an excess-3 code from BCD code

 0011 is added
 0110 is added
 0011 is subtracted
 0110 is subtracted

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Digital Electronics
The 1’s complement of 11010111 is

 10101000
 00101000
 10101000
 11101000

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to negative logic system.

 1 V and 5 V
 –1.5 V and – 0.5 V
 5 V and 0 V
 0 V and 5 V

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Digital Electronics
The code used for labeling the cells of a K-map is

 gray
 octal
 hexadecimal
 8-4-2-1 binary

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Digital Electronics
2's Complement of 10101011 is

 00111100
 10101011
 01010101
 10101100

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MORE MCQ ON Digital Electronics

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