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Digital Electronics

Digital Electronics
Which of the logical operations is represented by the + sign in Boolean algebra ?

 NOT
 OR
 AND
 NAND

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Digital Electronics
A ROM has a 16-bit address bus. The number of locations in this memory is

 65536
 1024
 32
 16

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Digital Electronics
Temperature variation is a/an

 Analog quantity
 Digital quantity
 Either Digital or Analog quantity
 None

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Digital Electronics
Which of the following BCD codes with an odd parity bit included in the end of code group, have error in the code? (I)1001010110000 (II)0100011101100 (III)0111110000011 (IV)1000011000101

 Both (I) & (II)
 Both (I)&(IV)
 Only (II)
 Both (II)&(III)

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Digital Electronics
The fan put of a 7400 NAND gate is

8TTL
10TTL
2TTL
5TTL

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Digital Electronics
How many input and output required for multiplexer ?

 Many input and one output
None of these
 One input and one output
 One input and many output

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