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Digital Electronics

Digital Electronics
Which of the following logic circuits is the fastest ?

 DTL.
 All have same speed.
 RTL.
 TTL.

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Digital Electronics
How many entries will be in the truth table of a 3 input NAND gate ?

 6
 3
 9
 8

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Digital Electronics
The inputs of a NAND gate are connected together. The resulting circuit is ___________.

NOT gate
OR gate
AND gate
None of these

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Digital Electronics
A half adder is a ________ circuit.

 Combinational
 Sequential
 Both A and B
 None

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

19
27
12
21

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

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