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Digital Electronics

Digital Electronics
A bubbled AND gate is equivalent to a

 OR gate
 NAND gate
 X-OR gate
 NOR gate

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Digital Electronics
When will be the output of an exclusive-OR gate is HIGH ?

 The inputs are equal
 All inputs are LOW
 The inputs are different
 All inputs are HIGH

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Digital Electronics
2's Complement of 10101011 is

 10101100
 00111100
 01010101
 10101011

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Digital Electronics
In the toggle mode a JK flip-flop has

 J = 1, K = 0.
 J = 0, K = 0.
 J = 1, K = 1.
 J = 0, K = 1.

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Digital Electronics
An EPROM

 is programmable
All of these
 is of random-access type
 is non volatile

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Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 2:1
 1:2
 1:1
 2:3

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