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Digital Electronics

Digital Electronics
The address bus with a ROM of size 1024 × 8 bits is

 16 bits
 10 bits
 8 bits
 12 bits

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 2’s complement is used to represent the numbers, then the range will be

 -128 to 128
 -128 to 127
 -256 to 256
 -256 to 255

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Digital Electronics
An 8 × 4 ROM contains a decoder of size

 3 × 4
 3 × 8
 8 × 4
 8 × 8

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Digital Electronics
The following code is not a BCD code.

 8421 code
 Gray code
 all of these
 XS-3 code

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Digital Electronics
Boolean algebra is also known as

 Counting algebra
 Gate algebra
 Transistor algebra
 Switching algebra

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Digital Electronics
Which one of the following is 2’s complement of -68?

 10111100
 00111100
 01111100
 11000100

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