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Digital Electronics

Digital Electronics
What is the Boolean expression for a two-input AND gate ?

 A & B
 A.B
 A + B
 A - B

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Digital Electronics
The output of a gate is LOW when at least one of its inputs is HIGH. This is true for

 OR
 AND
 NOR
 NAND

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Digital Electronics
A signed integer has been stored in a byte using 2’scomplement format. We wish to store the same integer in 16-bit word. We should copy the original byte to the less significant byte of the word and fill the more significant byte with

 1
 0
 Equal to the MSB of the original byte
 Complement of the MSB of the original byte

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Digital Electronics
In an SR latch built from NOR gates, which condition is not allowed

 S=0, R=0
 S=1, R=1
 S=0, R=1
 S=1, R=0

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Digital Electronics
The complement of a function A is

 1
 A
 Ā
 0

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Digital Electronics
When will be the output of an AND gate is HIGH if there are three inputs, A, B, and C ?

 A = 0, B = 0, C = 0
 A = 1, B = 1, C = 1
 A = 1, B = 0, C = 1
 A = 1, B = 1, C = 0

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