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Digital Electronics

Digital Electronics
What is the radix of octal number system ?

 10
 16
 8
 2

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

 3 × 8
 8 × 4
 8 × 8
 3 × 4

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Digital Electronics
For 4 bit parallel addition, we need ________ half adder(s) and ________ full adder(s)

 0 and 4
 1 and 3
 0 and 3
 1 and 4

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Digital Electronics
An AND gate will function as OR if

All the inputs are ‘0’
All the inputs and outputs are complemente'
Either of the inputs is “1”
All the inputs to the gates are “1”

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Digital Electronics
In Boolean algebra AND is represented by

 -
 +
 ×
 /

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Digital Electronics
Which of the following is 1’s complement representation of +57

 00000001
 00111001
 11000110
 01000110

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