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Digital Electronics

Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 1:1
 1:2
 2:3
 2:1

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

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

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Digital Electronics
2's Complement of 10101011 is

 10101100
 01010101
 10101011
 00111100

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Digital Electronics
The hex address of the 256th memory location is

 000FF
 00100
 00FFF
 001FF

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Digital Electronics
In binary number system the first digit (bit) from right to left is called as

 First Bit
 MSB, Most Significant Bit
 Last Bit
 LSB, Least Significant Bit

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Digital Electronics
The base of the number system for the addition operation 24 + 14 = 41 to be true is

 7
 8
 6
 5

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