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Digital Electronics

Digital Electronics
Four ROM chips of 16 × 4 size have their address buses connected together. This system will be of size

 256 × 1
 64 × 4
 32 × 8
 16 × 16

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Digital Electronics
The decimal equivalent of hexadecimal number “BEED” is

 48,777
 48,877
 none
 47,877

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Digital Electronics
Which of the following is 2’s complement of +12?

 00000011
 00001100
 01110011
 00001000

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Digital Electronics
A half adder is a ________ circuit.

 Combinational
 Sequential
 None
 Both A and B

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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

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

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Digital Electronics
An OR gate has 6 inputs. The number of input words in its truth table are

6
128
64
32

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