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Digital Electronics

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

 16
 65536
 32
 1024

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Digital Electronics
2-out-of-5 code is

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

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Digital Electronics
An n variable K-map can have

  nn cells
 n2n cells
 2n cells
 n2 cells

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Digital Electronics
Which of the following codes is known as the 8421 code?

 XS-3 code
 BCD code
 ASCII code
 Gray code

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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.

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

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Digital Electronics
The voltage levels for negative logic system

 must necessarily be 0 V and –5 V
 must necessarily be positive
 must necessarily be negative
 may be negative or positive

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