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Digital Electronics

Digital Electronics
A device which converts BCD into octal is called

 code converter
 demultiplexer
 encoder
 decoder

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Digital Electronics
Which of the following is known as a mod-2 adder?

 X-NOR gate
 X-OR gate
 NOR gate
 NAND gate

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Digital Electronics
X OR X' will result

 X'
 0
 X
 1

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Digital Electronics
An AND gate can be imagined as

 switches connected in parallel
 switches connected in series
 transistors connected in paralle
 transistors connected in series

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Digital Electronics
Which of the following gates is known as a coincidence detector?

 AND gate
 NAND gate
 X-NOR gate
 X-OR gate

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

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