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Digital Electronics

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

 TTL.
 RTL.
 All have same speed.
 DTL.

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

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

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Digital Electronics
2-out-of-5 code is

 self-complementing code
 alphanumeric code
 non-weighted code
 weighted code

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Digital Electronics
A single flip-flop can be cleared (reset) to

 1
 Both A and B
 0
 None

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

 code decoder
 coder
 code encoder
 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.

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

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