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Digital Electronics

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

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

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Digital Electronics
The following code is not a BCD code.

 all of these
 Gray code
 8421 code
 XS-3 code

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

NAND gates
None of these
NOT gates
OR gates

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Both (II)&(III)
 Only (III)
 Both (I)&(III)
 Only (II)

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Digital Electronics
In decimal number system what is MSD

 First digit from right to left
 Mean of all digits
 Middle digit
 First digit from left to right

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Digital Electronics
A multiplexer is a combinational logic circuit used to perform the operation

 AND-OR
 NOR-OR
 XOR-NAND
 AND-AND

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