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Digital Electronics

Digital Electronics
A half adder is a ________ circuit.

 None
 Combinational
 Both A and B
 Sequential

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Digital Electronics
A gate is enabled when its enable input is at logic 1. The gate is

 OR
 NAND
 NOR
 none of these

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Digital Electronics
Which GATE IS CALLED INEQUALITY COMPARATOR?

 1. NOR
 4. NOT
 3. XOR
 2. AND

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Digital Electronics
When will be the output of an exclusive-OR gate is HIGH ?

 The inputs are different
 All inputs are HIGH
 All inputs are LOW
 The inputs are equal

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Digital Electronics
Which of these circuits will give yield carry with more delay 1. Carry look ahead adder 2. Ripple carry adder

 1.
 both are same
 none
 2.

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Digital Electronics
Fastest memory element is

 RAM
 Hard Drive
 ROM
 Cache

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