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Digital Electronics

Digital Electronics
Consider the operation 24+17 = 40 .What is the correct base of number so that operation is correct?

 12
 10
 13
 11

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Digital Electronics
Fastest memory element is

 Cache
 ROM
 Hard Drive
 RAM

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Digital Electronics
Why generic array logic (GAL) device was invented ?

 Reprogrammable
None of these
 One-time programmable
 Mask programmable

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Digital Electronics
Which of these circuits have higher gate complexity 1. Carry look ahead adder 2. Ripple carry adder

 2
 none
 both have same
 1

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Digital Electronics
Which one of the following is 2’s complement of -68?

 00111100
 11000100
 01111100
 10111100

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

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

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