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Digital Electronics

Digital Electronics
The binary number designations of the rows and columns of the K-map are in

 BCD code
 Gray code
 XS-3 code
 binary code

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Digital Electronics
AND operation of (79)10 & (-56)10 is

 42H
 50H
 48H
 08H

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Digital Electronics
While using a frequency counter for measuring frequency, two modes of measurement are possible. 1. Period time 2. Frequency mode There is a ‘cross-over frequency’ below which the period mode is preferred. Assuming the crystal oscillator frequency to be 4Mhz the crossover frequency is given by

 2 Mhz
 8 Mhz
 2 Khz
 1 Khz

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Digital Electronics
Number of 2 input multiplexers need to construct a 210 inputs multiplexer is _________

 9
 32
 1023
 129

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Digital Electronics
Which of the following is not a transmission medium?

 Microwave systems.
 Telephone lines.
  Modem.
 Coaxial cables.

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Digital Electronics
The number of comparators in a parallel conversion type 8-bit analog to digital converter is

  255.
 16.
  8.
 256.

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