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Digital Electronics

Digital Electronics
Which of the following operations is commutative but not associative?

 NAND
 OR
 AND
 X-OR

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Digital Electronics
Which of these circuits will give yield carry with more delay 1. Carry look ahead adder 2. Ripple carry adder

 both are same
 none
 2.
 1.

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Digital Electronics
A number system with radix 2 is known as

 Binary
 Octal
 Decimal
 Hexadecimal

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Digital Electronics
The devices commonly used for making digital circuits are

 mechanical switches
 semiconductor devices
 relays
 contact switches

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Digital Electronics
16’s complement of BABA is?

 4546
 4446
 4445
 4544

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Digital Electronics
Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?

State Reduction
State Assignment
State Evaluation
State Minimization

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