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Digital Electronics

Digital Electronics
Which of these circuits will give yield carry with more delay 1. Carry look ahead adder 2. Ripple carry adder

 2.
 none
 1.
 both are same

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Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 16
 15
 7
 4

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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 1100
 0100 1111 0010 1101

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Digital Electronics
XNOR followed by a NOT gate is equivalant to ________ gate

 XOR
 XNOR
 OR
 NOR

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Digital Electronics
What is the gray code for the binary 101011?

 101011
 110101
 011111
 111110

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Digital Electronics
The hex address of the 256th memory location is

 001FF
 00FFF
 00100
 000FF

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