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Digital Electronics

Digital Electronics
A device which converts BCD into octal is called

 encoder
 decoder
 demultiplexer
 code converter

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Digital Electronics
Which of the following is 1’s complement representation of +57

 00111001
 11000110
 01000110
 00000001

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Digital Electronics
The universal gate is ___________

AND gate
None of these
OR gate
NAND gate

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

 BCD code
 Gray code
 XS-3 code
 ASCII code

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

 256
 255
 8
 128

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Digital Electronics
The maximum positive and negative numbers that can be represented in one’s complement using n-bits are respectively

 None of these
 +(2n-1-1),-(2n-1-1)
 +(2n-1-1),-2n-1
 +2n-1,-(2n-1-1)

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