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Digital Electronics

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

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

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Digital Electronics
The output of a logic gate is 0 when all its inputs are at logic 1. The gate is either

 a NAND or an X-OR
 a NAND or an X-NOR
 a NOR or an X-NOR
 a NAND or an AND

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Digital Electronics
If J = K (J and K are shorted) in a JK flip-flop, what circuit is made

 Shorted JK flip-flop
 T flip-flop
 K flip-flop
 SR flip-flop

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Digital Electronics
If 4 input MUXes drive a 4 input multiplexer, it results a

 16 input MUX
 4 input MUX
 6 input MUX
 8 input MUX

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Digital Electronics
Fastest memory element is

 Hard Drive
 ROM
 RAM
 Cache

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Digital Electronics
If two numbers in excess-3 code are added and the result is less than 9, then to get equivalent binary

 0011 is added
 0110 is added
 0011 is subtracted
 0110 is subtracted

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