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Digital Electronics

Digital Electronics
In SSI, the number of gate circuits per chip is

 < 6
 < 12
 < 25
 < 20

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Digital Electronics
A NAND gate is called a universal logic element because

Any logic function can be realized by NAND gates alone
All the minization techniques are applicable for optimum NAND gate realization
It is used by everybody
Many digital computers use NAND gates.

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Digital Electronics
The maximum positive and negative numbers which can be represented in two’s complement form using n bits are respectively,

 +(2n-1-1),-(2n-1-1)
 +(2n-1-1),-2n-1
 +2n-1,-2n-1
 +2n-1,-(2n-1+1)

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Digital Electronics
The main criterion in the design of a digital circuit is reduction of

 size
 weight
 cost
 volume

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Digital Electronics
An all or nothing gate is the other name of

 X-OR gate
 OR gate
 X-NOR gate
 AND gate

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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?

 four
 three
 two
 one

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