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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?

 2:1
 1:1
 1:2
 2:3

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Digital Electronics
Which one of the following is correct sequence of the numbers represented in the series(2)3, (10)4, (11)5, (14)6, (22)7,…………….

 2, 4, 6, 8, 10, …..
 2, 4, 6, 10, 12, …
 2, 3, 4, 5, 6, ….
 2, 4, 6, 10, 16……..

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Digital Electronics
In the toggle mode a JK flip-flop has

 J = 0, K = 0.
 J = 1, K = 1.
 J = 0, K = 1.
 J = 1, K = 0.

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Digital Electronics
Excess-3 code is known as

Cyclic redundancy code
Algebraic code
Self-complementing code
Weighted code

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Digital Electronics
If 4 input MUXes drive a 4 input multiplexer, it results a

 4 input MUX
 8 input MUX
 16 input MUX
 6 input MUX

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Digital Electronics
Minimization of logical expressions while designing digital systems helps in reducing

 space requirements
 cost
 power requirements
All of these

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