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Digital Electronics

Digital Electronics
The complement of a function A is

 Ā
 0
 1
 A

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Digital Electronics
The 7-bit Hamming code is used to transmit

 4 data bits
 3 data bits
 no data bits
 7 data bits

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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
 1.
 2.

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Digital Electronics
AND-OR realization of a combinational circuit is equivalent to

 NOR-NOR realization
 NAND-NAND realization
 NOR-NAND realization
 NAND-NOR realization

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Digital Electronics
A D-flip-flop is said to be transparent when

 the output is LOW
 the output follow input
 the output follows clock
 the output is HIGH

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

 5 V and 0 V
 –1.5 V and – 5 V
 1 V and -5 V
 0 V and 5 V

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