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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
 2:3
 1:2
 2:1

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Digital Electronics
For 4 bit parallel addition, we need ________ half adder(s) and ________ full adder(s)

 1 and 4
 0 and 3
 1 and 3
 0 and 4

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Digital Electronics
In the boolean algebra, a variable has ________ different state(s)/value(s).

 4
 2
 1
 3

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Digital Electronics
Complement of XNOR and NOR is ________ and ________ respectively.

 XOR, OR
 XOR, NOR
 OR, NOR
 NOR, XNOR

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

 3
 1
 2
 4

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Digital Electronics
The decimal equivalent of hexadecimal number “BEED” is

 47,877
 48,777
 none
 48,877

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