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Digital Electronics

Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 9
 10
 6
 12

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Digital Electronics
Latches are ________ circuits.

 level triggered
 edge triggered
 count triggered
 pulse triggered

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Digital Electronics
A group of four bits is known as

 Word
 Bit
 Nibble
 Byte

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Digital Electronics
The AND-OR realization of a combinational circuit requires three 3-input AND gates and one 3-input OR gate. This circuit can be designed using

 three 3-input NAND gates and one 3-input NOR gate
None of these
 three 3-input OR gates and one 3-input AND gate
 four input NAND gates only

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Digital Electronics
The most suitable gate to check whether the number of 1s in a digital word is even or odd is

 NOR
 AND, OR, and NOT
 NAND
 X-OR

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Digital Electronics
Which of the following codes is known as the 8421 code?

 XS-3 code
 ASCII code
 Gray code
 BCD code

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