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Digital Electronics

Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 10
 6
 12
 9

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

 X-OR
 OR
 NOR
 NAND

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Digital Electronics
In which of the following base systems is 123 not a valid number?

Base 10
Base 8
Base 16
Base 3

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Digital Electronics
A digital circuit that can store on bit is a

 flip-flop
 gate
 XOR gate
 registor

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Digital Electronics
What is the minimum number of NOR gates required realizing an X-OR gating?

 3
 4
 5
 6

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Digital Electronics
Which one of the following is correct sequence of the numbers represented in the series(2)3, (10)4, (11)5, (14)6, (22)7,…………….

 2, 4, 6, 10, 12, …
 2, 4, 6, 10, 16……..
 2, 4, 6, 8, 10, …..
 2, 3, 4, 5, 6, ….

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