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Digital Electronics

Digital Electronics
The output of a gate is HIGH when at least one of its inputs is LOW. It is true for

 NOR
 NAND
 X-OR
 OR

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Digital Electronics
The maximum positive and negative numbers which can be represented in two’s complement form using n bits are respectively,

 +(2n-1-1),-2n-1
 +2n-1,-(2n-1+1)
 +2n-1,-2n-1
 +(2n-1-1),-(2n-1-1)

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Digital Electronics
F’s complement of (2BFD)Hex is

 C403
 E304
 D403
 D402

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Digital Electronics
The decimal equivalent of the highest possible address for an 8-bit address bus is

 256
 255
 128
 8

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Digital Electronics
A self-complementing code for the decimal digits is created using the weight 4 4 3 -2. The value of 8592 in the code is

 1000 0101 1001 0010
 1100 0111 1111 0011
 1100 1011 1111 1001
 1100 1001 1111 1000

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Digital Electronics
A half adder has

 2 inputs and 2 output
 1 input and 2 outputs
 1 input and 1 output
 2 inputs and 1 outputs

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