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Digital Electronics

Digital Electronics
What is the minimum number of 2 input NAND gates used to perform the function of 2 input OR gate

 1
 3
 2
 4

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Digital Electronics
Maximum number in decimal that can be represented by 4 bits (binary) is

 15
 4
 7
 16

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Digital Electronics
The voltage levels for negative logic system

 must necessarily be 0 V and –5 V
 must necessarily be negative
 must necessarily be positive
 may be negative or positive

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Digital Electronics
What is the minimum number of two-input NAND gates used to perform the function of 2-input OR gate?

 three
 four
 one
 two

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Digital Electronics
The binary number 110011.11 is equivalent to decimal number

 50.75
 51.75
 50.65
 51.65

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

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

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