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Digital Electronics

Digital Electronics
The 1’s complement of 11010111 is

 10101000
 10101000
 00101000
 11101000

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Digital Electronics
In Boolean algebra A.A is equal to

 A
 2A
 A²
 1

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Digital Electronics
Digital circuit can be made by the repeated use of ___________

NOT gates
None of these
OR gates
NAND gates

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

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

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Digital Electronics
Which of the following represents (E3)16 ?

 (1BC)16-(DE)16
 (1CE)16+(A2)16
 (2BC)16-(1DE)16
 (200)16-(11D)16

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Digital Electronics
A device which converts decimal number into BCD form is called

 decoder
 code converter
 encoder
 multiplexer

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