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Digital Electronics

Digital Electronics
The output of a gate is HIGH if and only if all its inputs are LOW. It is true for

 NOR
 X-OR
 NAND
 X-NOR

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Digital Electronics
What is the gray code for the binary 101011?

 110101
 011111
 111110
 101011

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Digital Electronics
A ROM has a 16-bit address bus. The number of locations in this memory is

 32
 1024
 65536
 16

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Digital Electronics
A new Binary Coded Pantry (BCP) number system is proposed in which every digit of a base-5 number is represented by its corresponding 3-bit binary code. For example, the base-5 number 24 will be represented by its BCP code 010100. In this numbering system,the BCP code 100010011001 corresponds to the following number in base-5 system

 4231
 423
 2201
 1324

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Digital Electronics
The fan put of a 7400 NAND gate is

8TTL
2TTL
5TTL
10TTL

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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

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

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