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Digital Electronics

Digital Electronics
The binary number designations of the rows and columns of the K-map are in

 BCD code
 binary code
 Gray code
 XS-3 code

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Digital Electronics
The Quine– McClusky method of minimization of a logic expression is a (i) graphical method (ii) algebraic method (iii) tabular method (iv) a computer-oriented algorithm The correct answers are

 (iii) and (iv)
 (i) and (ii)
 (ii) and (iv)
 (i) and (iii)

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Digital Electronics
A device which converts 2421 code into 8421code is called a

 code encoder
 coder
 code decoder
 code converter

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to negative logic system.

 1 V and 5 V
 5 V and 0 V
 0 V and 5 V
 –1.5 V and – 0.5 V

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Digital Electronics
The number FF in base-16 systems will be equal to ________ in binary system.

 11111111
 11101110
 10101010
 10011001

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Digital Electronics
The parity of the binary number 11011001 is

 odd
 same as the number of zeros
 not known
 even

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