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Digital Electronics

Digital Electronics
Which of the following gates cannot be used as an inverter?

 X-NOR
 AND
 NOR
 NAND

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Digital Electronics
The effect of stray magnetic field on the actuating torque of a portable instrument is maximum when the operating field of the instrument and the stray fields are

 Inclined at 30°.
 Perpendicular.
 Inclined at 60°.
  Parallel.

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Digital Electronics
What is/are the configurable functions of each and every IOBs connected around the FPGA device from the operational point of view?

Bi-directional I/O pin access
Tristate output operation
All of these
Input operation

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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

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

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Digital Electronics
Why small bubble is given on the output of the NAND gate symbol ?

 Tristate
None of these
 Output is inverted
 Open collector output

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Digital Electronics
Which of the following is 1’s complement representation of +57

 11000110
 00111001
 00000001
 01000110

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