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Digital Electronics

Digital Electronics
It is desired to have a 64 × 8 ROM. The ROMs available are of 16 × 4 size. The number of ROMs required will be

 8
 2
 4
 6

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Digital Electronics
A number system with radix 2 is known as

 Binary
 Octal
 Hexadecimal
 Decimal

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Digital Electronics
How the digital signals is transmitted through a single conductor ?

 Parallel
None of these
 Serial
 Analog

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Digital Electronics
The 1’s complement of 11010111 is

 00101000
 11101000
 10101000
 10101000

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Digital Electronics
To add two m-bit numbers, the required number of half adder is

 2m
 2m+1
 2m-1
 2m-1

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Digital Electronics
When will be the output of a NOT gate is LOW ?

None of these
 the input is LOW.
 the input is HIGH and LOW.
 the input is HIGH.

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