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Digital Electronics

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

Base 3
Base 8
Base 10
Base 16

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Digital Electronics
(44)8 in BCD 8421 code is

 01100011
 01000100
 00110110
 00100100

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Digital Electronics
Odd parity of a bit stream can be tested using ________ gate.

 AND
 OR
 NOR
 XOR

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Digital Electronics
The parity of the binary number 11011001 is

 same as the number of zeros
 not known
 odd
 even

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Digital Electronics
A three-state buffer has the following output states

 Set, Reset, Halt
 High, Low, Float
 1, 0, float
 Both A and B

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Digital Electronics
Logic circuits are

 none of these
 hybrid circuits
 digital circuits
 analog circuits

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