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Digital Electronics

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

 1.
 none
 2.
 both are same

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Digital Electronics
In a read-only memory information can be stored

 in any of the above ways depending upon the type of memory
 by the user a number of times
 at the time of fabrication
 by the user only once during its life time

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to positive logic system.

 5 V and 0 V
 1 V and -5 V
 –1.5 V and – 5 V
 0 V and 5 V

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Digital Electronics
Convert the binary number (1111000011110000) to hexadecimal number

 7070
 F0F0
 1010
 5050

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Digital Electronics
An OR gate has 6 inputs. The number of input words in its truth table are

64
6
32
128

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

19
21
27
12

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