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Digital Electronics

Digital Electronics
2's Complement of 10101011 is

 01010101
 00111100
 10101011
 10101100

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Digital Electronics
8421 code is

 self-complementing code
 weighted code
 non-weighted code
 alphanumeric code

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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

 X-NOR
 NAND
 X-OR
 NOR

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Digital Electronics
A NAND gate is called a universal logic element because

It is used by everybody
Any logic function can be realized by NAND gates alone
Many digital computers use NAND gates.
All the minization techniques are applicable for optimum NAND gate realization

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Digital Electronics
(11011) 2 in BCD 8421 code is

 00100111
 01101100
 11011001
 00011011

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Digital Electronics
The complement of a function A is

 A
 1
 0
 Ā

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MORE MCQ ON Digital Electronics

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